64657854 has 24 divisors (see below), whose sum is σ = 142067952. Its totient is φ = 21248640.

The previous prime is 64657841. The next prime is 64657867. The reversal of 64657854 is 45875646.

It is an interprime number because it is at equal distance from previous prime (64657841) and next prime (64657867).

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 11 ways as a sum of consecutive naturals, for example, 24019 + ... + 26574.

It is an arithmetic number, because the mean of its divisors is an integer number (5919498).

Almost surely, 2^64657854 is an apocalyptic number.

64657854 is an abundant number, since it is smaller than the sum of its proper divisors (77410098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64657854 is a wasteful number, since it uses less digits than its factorization.

64657854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50672 (or 50669 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The square root of 64657854 is about 8041.0107573613. The cubic root of 64657854 is about 401.3658599248.

The spelling of 64657854 in words is "sixty-four million, six hundred fifty-seven thousand, eight hundred fifty-four".