620625670 has 24 divisors (see below), whose sum is σ = 1299515184. Its totient is φ = 212785776.

The previous prime is 620625619. The next prime is 620625689. The reversal of 620625670 is 76526026.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 632802 + ... + 633781.

It is an arithmetic number, because the mean of its divisors is an integer number (54146466).

Almost surely, 2^620625670 is an apocalyptic number.

620625670 is an abundant number, since it is smaller than the sum of its proper divisors (678889514).

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

620625670 is a wasteful number, since it uses less digits than its factorization.

620625670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1266604 (or 1266597 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 620625670 is about 24912.3597838503. The cubic root of 620625670 is about 852.9886352283.

The spelling of 620625670 in words is "six hundred twenty million, six hundred twenty-five thousand, six hundred seventy".