654023969 has 2 divisors, whose sum is σ = 654023970. Its totient is φ = 654023968.

The previous prime is 654023959. The next prime is 654023977. The reversal of 654023969 is 969320456.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 400800400 + 253223569 = 20020^2 + 15913^2 .

It is a cyclic number.

It is not a de Polignac number, because 654023969 - 2²⁸ = 385588513 is a prime.

It is a super-2 number, since 2×654023969² = 855494704053025922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (654023959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327011984 + 327011985.

It is an arithmetic number, because the mean of its divisors is an integer number (327011985).

Almost surely, 2^654023969 is an apocalyptic number.

It is an amenable number.

654023969 is a deficient number, since it is larger than the sum of its proper divisors (1).

654023969 is an equidigital number, since it uses as much as digits as its factorization.

654023969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 349920, while the sum is 44.

The square root of 654023969 is about 25573.8923318293. The cubic root of 654023969 is about 868.0229775997.

The spelling of 654023969 in words is "six hundred fifty-four million, twenty-three thousand, nine hundred sixty-nine".