620704620 has 72 divisors (see below), whose sum is σ = 1952552784. Its totient is φ = 165519936.

The previous prime is 620704583. The next prime is 620704739. The reversal of 620704620 is 26407026.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58999 + ... + 68718.

Almost surely, 2^620704620 is an apocalyptic number.

620704620 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

620704620 is an abundant number, since it is smaller than the sum of its proper divisors (1331848164).

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

620704620 is a wasteful number, since it uses less digits than its factorization.

620704620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127741 (or 127727 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 620704620 is about 24913.9442882896. The cubic root of 620704620 is about 853.0248033516.

The spelling of 620704620 in words is "six hundred twenty million, seven hundred four thousand, six hundred twenty".