649040760 has 96 divisors (see below), whose sum is σ = 2220426000. Its totient is φ = 163966464.

The previous prime is 649040759. The next prime is 649040761. The reversal of 649040760 is 67040946.

649040760 is a `hidden beast` number, since 649 + 0 + 4 + 0 + 7 + 6 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (649040759) and next prime (649040761).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649040761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40605 + ... + 54284.

Almost surely, 2^649040760 is an apocalyptic number.

649040760 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

649040760 is an abundant number, since it is smaller than the sum of its proper divisors (1571385240).

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

649040760 is a wasteful number, since it uses less digits than its factorization.

649040760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94925 (or 94918 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 649040760 is about 25476.2783781305. The cubic root of 649040760 is about 865.8127769897.

The spelling of 649040760 in words is "six hundred forty-nine million, forty thousand, seven hundred sixty".