64646242 has 16 divisors (see below), whose sum is σ = 98035200. Its totient is φ = 31970160.

The previous prime is 64646233. The next prime is 64646251. The reversal of 64646242 is 24264646.

It is an interprime number because it is at equal distance from previous prime (64646233) and next prime (64646251).

It is a junction number, because it is equal to n+sod(n) for n = 64646198 and 64646207.

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, 87109 + ... + 87847.

It is an arithmetic number, because the mean of its divisors is an integer number (6127200).

Almost surely, 2^64646242 is an apocalyptic number.

64646242 is a deficient number, since it is larger than the sum of its proper divisors (33388958).

64646242 is a wasteful number, since it uses less digits than its factorization.

64646242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161.

The product of its digits is 55296, while the sum is 34.

The square root of 64646242 is about 8040.2886764096. The cubic root of 64646242 is about 401.3418311894.

The spelling of 64646242 in words is "sixty-four million, six hundred forty-six thousand, two hundred forty-two".