620167774867 has 2 divisors, whose sum is σ = 620167774868. Its totient is φ = 620167774866.

The previous prime is 620167774843. The next prime is 620167774943. The reversal of 620167774867 is 768477761026.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-620167774867 is a prime.

It is not a weakly prime, because it can be changed into another prime (620162774867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310083887433 + 310083887434.

It is an arithmetic number, because the mean of its divisors is an integer number (310083887434).

Almost surely, 2^620167774867 is an apocalyptic number.

620167774867 is a deficient number, since it is larger than the sum of its proper divisors (1).

620167774867 is an equidigital number, since it uses as much as digits as its factorization.

620167774867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33191424, while the sum is 61.

The spelling of 620167774867 in words is "six hundred twenty billion, one hundred sixty-seven million, seven hundred seventy-four thousand, eight hundred sixty-seven".