622626660 has 36 divisors (see below), whose sum is σ = 1888634748. Its totient is φ = 166033728.

The previous prime is 622626647. The next prime is 622626677. The reversal of 622626660 is 66626226.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 406183716 + 216442944 = 20154^2 + 14712^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1729339 + ... + 1729698.

Almost surely, 2^622626660 is an apocalyptic number.

622626660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

622626660 is an abundant number, since it is smaller than the sum of its proper divisors (1266008088).

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

622626660 is a wasteful number, since it uses less digits than its factorization.

622626660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3459052 (or 3459047 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 622626660 is about 24952.4880522965. The cubic root of 622626660 is about 853.9043727605.

It can be divided in two parts, 622626 and 660, that added together give a triangular number (623286 = T₁₁₁₆).

The spelling of 622626660 in words is "six hundred twenty-two million, six hundred twenty-six thousand, six hundred sixty".