64622656 has 28 divisors (see below), whose sum is σ = 146555968. Its totient is φ = 27695232.

The previous prime is 64622653. The next prime is 64622659. The reversal of 64622656 is 65622646.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (64622653) and next prime (64622659).

It is a tau number, because it is divible by the number of its divisors (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64622653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71676 + ... + 72571.

Almost surely, 2^64622656 is an apocalyptic number.

It is an amenable number.

64622656 is an abundant number, since it is smaller than the sum of its proper divisors (81933312).

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

64622656 is a wasteful number, since it uses less digits than its factorization.

64622656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144266 (or 144256 counting only the distinct ones).

The product of its digits is 103680, while the sum is 37.

The square root of 64622656 is about 8038.8218042198. The cubic root of 64622656 is about 401.2930157718.

The spelling of 64622656 in words is "sixty-four million, six hundred twenty-two thousand, six hundred fifty-six".