620561155067 has 16 divisors (see below), whose sum is σ = 739398654720. Its totient is φ = 509736925152.

The previous prime is 620561155063. The next prime is 620561155111. The reversal of 620561155067 is 760551165026.

It is not a de Polignac number, because 620561155067 - 2² = 620561155063 is a prime.

It is a super-2 number, since 2×620561155067² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620561155063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19433717 + ... + 19465622.

It is an arithmetic number, because the mean of its divisors is an integer number (46212415920).

Almost surely, 2^620561155067 is an apocalyptic number.

620561155067 is a deficient number, since it is larger than the sum of its proper divisors (118837499653).

620561155067 is a wasteful number, since it uses less digits than its factorization.

620561155067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38899442.

The product of its (nonzero) digits is 378000, while the sum is 44.

The spelling of 620561155067 in words is "six hundred twenty billion, five hundred sixty-one million, one hundred fifty-five thousand, sixty-seven".