620656051 has 2 divisors, whose sum is σ = 620656052. Its totient is φ = 620656050.

The previous prime is 620656027. The next prime is 620656063. The reversal of 620656051 is 150656026.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 620656051 - 2⁷ = 620655923 is a prime.

It is not a weakly prime, because it can be changed into another prime (620656651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310328025 + 310328026.

It is an arithmetic number, because the mean of its divisors is an integer number (310328026).

Almost surely, 2^620656051 is an apocalyptic number.

620656051 is a deficient number, since it is larger than the sum of its proper divisors (1).

620656051 is an equidigital number, since it uses as much as digits as its factorization.

620656051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 620656051 is about 24912.9695339596. The cubic root of 620656051 is about 853.0025535616.

The spelling of 620656051 in words is "six hundred twenty million, six hundred fifty-six thousand, fifty-one".