64520942 has 16 divisors (see below), whose sum is σ = 99470592. Its totient is φ = 31372920.

The previous prime is 64520917. The next prime is 64520983. The reversal of 64520942 is 24902546.

It is a junction number, because it is equal to n+sod(n) for n = 64520899 and 64520908.

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, 13217 + ... + 17427.

It is an arithmetic number, because the mean of its divisors is an integer number (6216912).

Almost surely, 2^64520942 is an apocalyptic number.

64520942 is a deficient number, since it is larger than the sum of its proper divisors (34949650).

64520942 is a wasteful number, since it uses less digits than its factorization.

64520942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4423.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 64520942 is about 8032.4928882633. The cubic root of 64520942 is about 401.0823644099.

The spelling of 64520942 in words is "sixty-four million, five hundred twenty thousand, nine hundred forty-two".