620106145920 has 96 divisors (see below), whose sum is σ = 2141304055020. Its totient is φ = 165361637376.

The previous prime is 620106145913. The next prime is 620106145961. The reversal of 620106145920 is 29541601026.

620106145920 is a `hidden beast` number, since 6 + 2 + 0 + 1 + 0 + 61 + 4 + 592 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 620099551296 + 6594624 = 787464^2 + 2568^2 .

It is a tau number, because it is divible by the number of its divisors (96).

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53822899 + ... + 53834418.

Almost surely, 2^620106145920 is an apocalyptic number.

620106145920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

620106145920 is an abundant number, since it is smaller than the sum of its proper divisors (1521197909100).

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

620106145920 is a wasteful number, since it uses less digits than its factorization.

620106145920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107657342 (or 107657327 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

Adding to 620106145920 its reverse (29541601026), we get a palindrome (649647746946).

The spelling of 620106145920 in words is "six hundred twenty billion, one hundred six million, one hundred forty-five thousand, nine hundred twenty".