620906753 has 2 divisors, whose sum is σ = 620906754. Its totient is φ = 620906752.

The previous prime is 620906729. The next prime is 620906773. The reversal of 620906753 is 357609026.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 612216049 + 8690704 = 24743^2 + 2948^2 .

It is a cyclic number.

It is not a de Polignac number, because 620906753 - 2⁸ = 620906497 is a prime.

It is not a weakly prime, because it can be changed into another prime (620906773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310453376 + 310453377.

It is an arithmetic number, because the mean of its divisors is an integer number (310453377).

Almost surely, 2^620906753 is an apocalyptic number.

It is an amenable number.

620906753 is a deficient number, since it is larger than the sum of its proper divisors (1).

620906753 is an equidigital number, since it uses as much as digits as its factorization.

620906753 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 38.

The square root of 620906753 is about 24918.0005819087. Note that the first 3 decimals coincide. The cubic root of 620906753 is about 853.1173893921.

The spelling of 620906753 in words is "six hundred twenty million, nine hundred six thousand, seven hundred fifty-three".