648355950 has 72 divisors (see below), whose sum is σ = 1900286856. Its totient is φ = 157176000.

The previous prime is 648355949. The next prime is 648355951. The reversal of 648355950 is 59553846.

648355950 is a `hidden beast` number, since 6 + 48 + 3 + 559 + 50 = 666.

It is an interprime number because it is at equal distance from previous prime (648355949) and next prime (648355951).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 648355896 and 648355905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648355951) 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 35 ways as a sum of consecutive naturals, for example, 60541 + ... + 70440.

It is an arithmetic number, because the mean of its divisors is an integer number (26392873).

Almost surely, 2^648355950 is an apocalyptic number.

648355950 is an abundant number, since it is smaller than the sum of its proper divisors (1251930906).

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

648355950 is a wasteful number, since it uses less digits than its factorization.

648355950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131010 (or 131002 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

The square root of 648355950 is about 25462.8346811583. The cubic root of 648355950 is about 865.5081603216.

The spelling of 648355950 in words is "six hundred forty-eight million, three hundred fifty-five thousand, nine hundred fifty".