620404043436 has 36 divisors (see below), whose sum is σ = 1572193826112. Its totient is φ = 206280432864.

The previous prime is 620404043431. The next prime is 620404043503. The reversal of 620404043436 is 634340404026.

620404043436 is a `hidden beast` number, since 6 + 204 + 0 + 404 + 3 + 43 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×620404043436² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 620404043436.

It is not an unprimeable number, because it can be changed into a prime (620404043431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21690300 + ... + 21718883.

Almost surely, 2^620404043436 is an apocalyptic number.

It is an amenable number.

620404043436 is an abundant number, since it is smaller than the sum of its proper divisors (951789782676).

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

620404043436 is a wasteful number, since it uses less digits than its factorization.

620404043436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43409590 (or 43409585 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 36.

The spelling of 620404043436 in words is "six hundred twenty billion, four hundred four million, forty-three thousand, four hundred thirty-six".