620631107 has 4 divisors (see below), whose sum is σ = 620751096. Its totient is φ = 620511120.

The previous prime is 620631101. The next prime is 620631133. The reversal of 620631107 is 701136026.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 620631107 - 2⁴ = 620631091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620631101) 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, 51869 + ... + 62702.

It is an arithmetic number, because the mean of its divisors is an integer number (155187774).

Almost surely, 2^620631107 is an apocalyptic number.

620631107 is a deficient number, since it is larger than the sum of its proper divisors (119989).

620631107 is a wasteful number, since it uses less digits than its factorization.

620631107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119988.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 620631107 is about 24912.4689061522. The cubic root of 620631107 is about 852.9911260940.

The spelling of 620631107 in words is "six hundred twenty million, six hundred thirty-one thousand, one hundred seven".