64902136 has 64 divisors (see below), whose sum is σ = 140152320. Its totient is φ = 27941760.

The previous prime is 64902091. The next prime is 64902169. The reversal of 64902136 is 63120946.

It is a junction number, because it is equal to n+sod(n) for n = 64902098 and 64902107.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 102541 + ... + 103171.

It is an arithmetic number, because the mean of its divisors is an integer number (2189880).

Almost surely, 2^64902136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64902136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70076160).

64902136 is an abundant number, since it is smaller than the sum of its proper divisors (75250184).

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

64902136 is a wasteful number, since it uses less digits than its factorization.

64902136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716 (or 712 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 64902136 is about 8056.1861944719. The cubic root of 64902136 is about 401.8706876806.

The spelling of 64902136 in words is "sixty-four million, nine hundred two thousand, one hundred thirty-six".