620664006 has 16 divisors (see below), whose sum is σ = 1254126384. Its totient is φ = 204754944.

The previous prime is 620663941. The next prime is 620664007. The reversal of 620664006 is 600466026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620664007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 532635 + ... + 533798.

It is an arithmetic number, because the mean of its divisors is an integer number (78382899).

Almost surely, 2^620664006 is an apocalyptic number.

620664006 is an abundant number, since it is smaller than the sum of its proper divisors (633462378).

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

620664006 is a wasteful number, since it uses less digits than its factorization.

620664006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066535.

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

The square root of 620664006 is about 24913.1291892448. The cubic root of 620664006 is about 853.0061978809.

The spelling of 620664006 in words is "six hundred twenty million, six hundred sixty-four thousand, six".