620207664 has 20 divisors (see below), whose sum is σ = 1602203256. Its totient is φ = 206735872.

The previous prime is 620207663. The next prime is 620207683. The reversal of 620207664 is 466702026.

It is not an unprimeable number, because it can be changed into a prime (620207663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6460449 + ... + 6460544.

Almost surely, 2^620207664 is an apocalyptic number.

It is an amenable number.

620207664 is an abundant number, since it is smaller than the sum of its proper divisors (981995592).

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

620207664 is a wasteful number, since it uses less digits than its factorization.

620207664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12921004 (or 12920998 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 620207664 is about 24903.9688403274. The cubic root of 620207664 is about 852.7970895758.

The spelling of 620207664 in words is "six hundred twenty million, two hundred seven thousand, six hundred sixty-four".