648613260 has 72 divisors (see below), whose sum is σ = 2071021680. Its totient is φ = 163859328.

The previous prime is 648613253. The next prime is 648613267. The reversal of 648613260 is 62316846.

648613260 is a `hidden beast` number, since 648 + 6 + 1 + 3 + 2 + 6 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (648613253) and next prime (648613267).

It is a super-2 number, since 2×648613260² = 841398322095655200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (648613267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91407 + ... + 98246.

It is an arithmetic number, because the mean of its divisors is an integer number (28764190).

Almost surely, 2^648613260 is an apocalyptic number.

648613260 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

648613260 is an abundant number, since it is smaller than the sum of its proper divisors (1422408420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

648613260 is a wasteful number, since it uses less digits than its factorization.

648613260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189687 (or 189682 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 648613260 is about 25467.8868381340. The cubic root of 648613260 is about 865.6226419065.

It can be divided in two parts, 64861 and 3260, that added together give a square (68121 = 261²).

The spelling of 648613260 in words is "six hundred forty-eight million, six hundred thirteen thousand, two hundred sixty".