620400036 has 12 divisors (see below), whose sum is σ = 1447600112. Its totient is φ = 206800008.

The previous prime is 620400019. The next prime is 620400037. The reversal of 620400036 is 630004026.

620400036 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 620399985 and 620400021.

It is not an unprimeable number, because it can be changed into a prime (620400037) 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, 25849990 + ... + 25850013.

Almost surely, 2^620400036 is an apocalyptic number.

It is an amenable number.

620400036 is an abundant number, since it is smaller than the sum of its proper divisors (827200076).

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

620400036 is a wasteful number, since it uses less digits than its factorization.

620400036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51700010 (or 51700008 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 620400036 is about 24907.8308168335. The cubic root of 620400036 is about 852.8852521556.

The spelling of 620400036 in words is "six hundred twenty million, four hundred thousand, thirty-six".