64646042 has 8 divisors (see below), whose sum is σ = 97168032. Its totient is φ = 32256700.

The previous prime is 64646033. The next prime is 64646069. The reversal of 64646042 is 24064646.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×64646042² = 8358221492531528, which contains 22 as substring.

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, 31934 + ... + 33897.

It is an arithmetic number, because the mean of its divisors is an integer number (12146004).

Almost surely, 2^64646042 is an apocalyptic number.

64646042 is a deficient number, since it is larger than the sum of its proper divisors (32521990).

64646042 is a wasteful number, since it uses less digits than its factorization.

64646042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66324.

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 64646042 is about 8040.2762390356. The cubic root of 64646042 is about 401.3414173037.

The spelling of 64646042 in words is "sixty-four million, six hundred forty-six thousand, forty-two".