620600646 has 8 divisors (see below), whose sum is σ = 1241201304. Its totient is φ = 206866880.

The previous prime is 620600627. The next prime is 620600653. The reversal of 620600646 is 646006026.

It is a sphenic number, since it is the product of 3 distinct primes.

620600646 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51716715 + ... + 51716726.

It is an arithmetic number, because the mean of its divisors is an integer number (155150163).

Almost surely, 2^620600646 is an apocalyptic number.

620600646 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

620600646 is a wasteful number, since it uses less digits than its factorization.

620600646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103433446.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 620600646 is about 24911.8575381283. The cubic root of 620600646 is about 852.9771707361.

The spelling of 620600646 in words is "six hundred twenty million, six hundred thousand, six hundred forty-six".