620106864 has 80 divisors (see below), whose sum is σ = 1800218112. Its totient is φ = 182502144.

The previous prime is 620106833. The next prime is 620106901. The reversal of 620106864 is 468601026.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7252 + ... + 35955.

Almost surely, 2^620106864 is an apocalyptic number.

It is an amenable number.

620106864 is an abundant number, since it is smaller than the sum of its proper divisors (1180111248).

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

620106864 is a wasteful number, since it uses less digits than its factorization.

620106864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43254 (or 43248 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 620106864 is about 24901.9449842778. The cubic root of 620106864 is about 852.7508864469.

The spelling of 620106864 in words is "six hundred twenty million, one hundred six thousand, eight hundred sixty-four".