620814452800 has 84 divisors (see below), whose sum is σ = 1535346614340. Its totient is φ = 247065118720.

The previous prime is 620814452789. The next prime is 620814452809. The reversal of 620814452800 is 8254418026.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 18054759424 + 602759693376 = 134368^2 + 776376^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (620814452809) 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, 669595 + ... + 1299994.

It is an arithmetic number, because the mean of its divisors is an integer number (18277935885).

Almost surely, 2^620814452800 is an apocalyptic number.

It is an amenable number.

620814452800 is an abundant number, since it is smaller than the sum of its proper divisors (914532161540).

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

620814452800 is a wasteful number, since it uses less digits than its factorization.

620814452800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1969808 (or 1969793 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 40.

The spelling of 620814452800 in words is "six hundred twenty billion, eight hundred fourteen million, four hundred fifty-two thousand, eight hundred".