64911740 has 12 divisors (see below), whose sum is σ = 136314696. Its totient is φ = 25964688.

The previous prime is 64911739. The next prime is 64911757. The reversal of 64911740 is 4711946.

It is a junction number, because it is equal to n+sod(n) for n = 64911697 and 64911706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1622774 + ... + 1622813.

It is an arithmetic number, because the mean of its divisors is an integer number (11359558).

Almost surely, 2^64911740 is an apocalyptic number.

It is an amenable number.

64911740 is an abundant number, since it is smaller than the sum of its proper divisors (71402956).

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

64911740 is a wasteful number, since it uses less digits than its factorization.

64911740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3245596 (or 3245594 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 64911740 is about 8056.7822361039. The cubic root of 64911740 is about 401.8905091943.

The spelling of 64911740 in words is "sixty-four million, nine hundred eleven thousand, seven hundred forty".