64942905 has 16 divisors (see below), whose sum is σ = 104166720. Its totient is φ = 34550208.

The previous prime is 64942897. The next prime is 64942921. The reversal of 64942905 is 50924946.

It is not a de Polignac number, because 64942905 - 2³ = 64942897 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1119 + ... + 11451.

It is an arithmetic number, because the mean of its divisors is an integer number (6510420).

Almost surely, 2^64942905 is an apocalyptic number.

It is an amenable number.

64942905 is a deficient number, since it is larger than the sum of its proper divisors (39223815).

64942905 is a wasteful number, since it uses less digits than its factorization.

64942905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10760.

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 64942905 is about 8058.7160888072. The cubic root of 64942905 is about 401.9548165846.

The spelling of 64942905 in words is "sixty-four million, nine hundred forty-two thousand, nine hundred five".