654636634 has 24 divisors (see below), whose sum is σ = 1013495868. Its totient is φ = 317122560.

The previous prime is 654636623. The next prime is 654636643. The reversal of 654636634 is 436636456.

It is a happy number.

654636634 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 651015225 + 3621409 = 25515^2 + 1903^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1020954 + ... + 1021594.

Almost surely, 2^654636634 is an apocalyptic number.

654636634 is a deficient number, since it is larger than the sum of its proper divisors (358859234).

654636634 is a wasteful number, since it uses less digits than its factorization.

654636634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090 (or 1053 counting only the distinct ones).

The product of its digits is 933120, while the sum is 43.

The square root of 654636634 is about 25585.8678570808. The cubic root of 654636634 is about 868.2939367439.

The spelling of 654636634 in words is "six hundred fifty-four million, six hundred thirty-six thousand, six hundred thirty-four".