64872654 has 32 divisors (see below), whose sum is σ = 161761536. Its totient is φ = 16849920.

The previous prime is 64872637. The next prime is 64872659. The reversal of 64872654 is 45627846.

It is a super-2 number, since 2×64872654² = 8416922474007432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64872659) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69747 + ... + 70670.

It is an arithmetic number, because the mean of its divisors is an integer number (5055048).

Almost surely, 2^64872654 is an apocalyptic number.

64872654 is an abundant number, since it is smaller than the sum of its proper divisors (96888882).

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

64872654 is a wasteful number, since it uses less digits than its factorization.

64872654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140440.

The product of its digits is 322560, while the sum is 42.

The square root of 64872654 is about 8054.3562126343. The cubic root of 64872654 is about 401.8098281220.

The spelling of 64872654 in words is "sixty-four million, eight hundred seventy-two thousand, six hundred fifty-four".