620656311 has 48 divisors (see below), whose sum is σ = 962196480. Its totient is φ = 354868800.

The previous prime is 620656307. The next prime is 620656327. The reversal of 620656311 is 113656026.

It is not a de Polignac number, because 620656311 - 2² = 620656307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620656331) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 659101 + ... + 660041.

It is an arithmetic number, because the mean of its divisors is an integer number (20045760).

Almost surely, 2^620656311 is an apocalyptic number.

620656311 is a deficient number, since it is larger than the sum of its proper divisors (341540169).

620656311 is a wasteful number, since it uses less digits than its factorization.

620656311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068 (or 1057 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 620656311 is about 24912.9747521246. The cubic root of 620656311 is about 853.0026726725.

The spelling of 620656311 in words is "six hundred twenty million, six hundred fifty-six thousand, three hundred eleven".