620656011 has 24 divisors (see below), whose sum is σ = 907785840. Its totient is φ = 408597696.

The previous prime is 620655979. The next prime is 620656027. The reversal of 620656011 is 110656026.

It is a happy number.

620656011 is a `hidden beast` number, since 6 + 2 + 0 + 656 + 0 + 1 + 1 = 666.

It is not a de Polignac number, because 620656011 - 2⁵ = 620655979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (620656051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 243180 + ... + 245718.

It is an arithmetic number, because the mean of its divisors is an integer number (37824410).

Almost surely, 2^620656011 is an apocalyptic number.

620656011 is a deficient number, since it is larger than the sum of its proper divisors (287129829).

620656011 is a wasteful number, since it uses less digits than its factorization.

620656011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2875 (or 2872 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 620656011 is about 24912.9687311649. The cubic root of 620656011 is about 853.0025352369.

The spelling of 620656011 in words is "six hundred twenty million, six hundred fifty-six thousand, eleven".