622564664 has 64 divisors (see below), whose sum is σ = 1257711840. Its totient is φ = 288368640.

The previous prime is 622564601. The next prime is 622564669. The reversal of 622564664 is 466465226.

It is a super-2 number, since 2×622564664² = 775173521722865792, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622564669) 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, 521252 + ... + 522444.

Almost surely, 2^622564664 is an apocalyptic number.

It is an amenable number.

622564664 is an abundant number, since it is smaller than the sum of its proper divisors (635147176).

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

622564664 is a wasteful number, since it uses less digits than its factorization.

622564664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320 (or 1316 counting only the distinct ones).

The product of its digits is 414720, while the sum is 41.

The square root of 622564664 is about 24951.2457404435. The cubic root of 622564664 is about 853.8760302474.

The spelling of 622564664 in words is "six hundred twenty-two million, five hundred sixty-four thousand, six hundred sixty-four".