654410639 has 2 divisors, whose sum is σ = 654410640. Its totient is φ = 654410638.

The previous prime is 654410629. The next prime is 654410683. The reversal of 654410639 is 936014456.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 654410639 - 2¹⁶ = 654345103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (654410629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327205319 + 327205320.

It is an arithmetic number, because the mean of its divisors is an integer number (327205320).

Almost surely, 2^654410639 is an apocalyptic number.

654410639 is a deficient number, since it is larger than the sum of its proper divisors (1).

654410639 is an equidigital number, since it uses as much as digits as its factorization.

654410639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 654410639 is about 25581.4510729943. The cubic root of 654410639 is about 868.1940071732.

The spelling of 654410639 in words is "six hundred fifty-four million, four hundred ten thousand, six hundred thirty-nine".