64770136 has 32 divisors (see below), whose sum is σ = 131336640. Its totient is φ = 29828608.

The previous prime is 64770109. The next prime is 64770149. The reversal of 64770136 is 63107746.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1326 + ... + 11458.

It is an arithmetic number, because the mean of its divisors is an integer number (4104270).

Almost surely, 2^64770136 is an apocalyptic number.

It is an amenable number.

64770136 is an abundant number, since it is smaller than the sum of its proper divisors (66566504).

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

64770136 is a wasteful number, since it uses less digits than its factorization.

64770136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10203 (or 10199 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 64770136 is about 8047.9895626175. The cubic root of 64770136 is about 401.5980570320.

The spelling of 64770136 in words is "sixty-four million, seven hundred seventy thousand, one hundred thirty-six".