620664662 has 32 divisors (see below), whose sum is σ = 1011455424. Its totient is φ = 284544000.

The previous prime is 620664643. The next prime is 620664703. The reversal of 620664662 is 266466026.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 270962 + ... + 273242.

It is an arithmetic number, because the mean of its divisors is an integer number (31607982).

Almost surely, 2^620664662 is an apocalyptic number.

620664662 is a deficient number, since it is larger than the sum of its proper divisors (390790762).

620664662 is a wasteful number, since it uses less digits than its factorization.

620664662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2504.

The product of its (nonzero) digits is 124416, while the sum is 38.

The square root of 620664662 is about 24913.1423549901. The cubic root of 620664662 is about 853.0064984041.

The spelling of 620664662 in words is "six hundred twenty million, six hundred sixty-four thousand, six hundred sixty-two".