64642486 has 16 divisors (see below), whose sum is σ = 99556128. Its totient is φ = 31460800.

The previous prime is 64642477. The next prime is 64642499. The reversal of 64642486 is 68424646.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60396 + ... + 61456.

It is an arithmetic number, because the mean of its divisors is an integer number (6222258).

Almost surely, 2^64642486 is an apocalyptic number.

64642486 is a deficient number, since it is larger than the sum of its proper divisors (34913642).

64642486 is a wasteful number, since it uses less digits than its factorization.

64642486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1847.

The product of its digits is 221184, while the sum is 40.

The square root of 64642486 is about 8040.0550993137. The cubic root of 64642486 is about 401.3340582750.

The spelling of 64642486 in words is "sixty-four million, six hundred forty-two thousand, four hundred eighty-six".