620910894 has 16 divisors (see below), whose sum is σ = 1242097920. Its totient is φ = 206924280.

The previous prime is 620910893. The next prime is 620910923. The reversal of 620910894 is 498019026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620910893) 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, 28347 + ... + 45225.

It is an arithmetic number, because the mean of its divisors is an integer number (77631120).

Almost surely, 2^620910894 is an apocalyptic number.

620910894 is an abundant number, since it is smaller than the sum of its proper divisors (621187026).

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

620910894 is a wasteful number, since it uses less digits than its factorization.

620910894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23015.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 620910894 is about 24918.0836743117. The cubic root of 620910894 is about 853.1192859470.

The spelling of 620910894 in words is "six hundred twenty million, nine hundred ten thousand, eight hundred ninety-four".