623706971 has 2 divisors, whose sum is σ = 623706972. Its totient is φ = 623706970.

The previous prime is 623706961. The next prime is 623706991. The reversal of 623706971 is 179607326.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 623706971 - 2⁶ = 623706907 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (623706911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311853485 + 311853486.

It is an arithmetic number, because the mean of its divisors is an integer number (311853486).

Almost surely, 2^623706971 is an apocalyptic number.

623706971 is a deficient number, since it is larger than the sum of its proper divisors (1).

623706971 is an equidigital number, since it uses as much as digits as its factorization.

623706971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 95256, while the sum is 41.

The square root of 623706971 is about 24974.1260307543. The cubic root of 623706971 is about 854.3979533339.

The spelling of 623706971 in words is "six hundred twenty-three million, seven hundred six thousand, nine hundred seventy-one".