654566923 has 2 divisors, whose sum is σ = 654566924. Its totient is φ = 654566922.

The previous prime is 654566911. The next prime is 654566951. The reversal of 654566923 is 329665456.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-654566923 is a prime.

It is not a weakly prime, because it can be changed into another prime (654566993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327283461 + 327283462.

It is an arithmetic number, because the mean of its divisors is an integer number (327283462).

Almost surely, 2^654566923 is an apocalyptic number.

654566923 is a deficient number, since it is larger than the sum of its proper divisors (1).

654566923 is an equidigital number, since it uses as much as digits as its factorization.

654566923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1166400, while the sum is 46.

The square root of 654566923 is about 25584.5055258060. The cubic root of 654566923 is about 868.2631146643.

The spelling of 654566923 in words is "six hundred fifty-four million, five hundred sixty-six thousand, nine hundred twenty-three".