654410644 has 6 divisors (see below), whose sum is σ = 1145218634. Its totient is φ = 327205320.

The previous prime is 654410639. The next prime is 654410683. The reversal of 654410644 is 446014456.

It can be written as a sum of positive squares in only one way, i.e., 495952900 + 158457744 = 22270^2 + 12588^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81801327 + ... + 81801334.

Almost surely, 2^654410644 is an apocalyptic number.

It is an amenable number.

654410644 is a deficient number, since it is larger than the sum of its proper divisors (490807990).

654410644 is a wasteful number, since it uses less digits than its factorization.

654410644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163602665 (or 163602663 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 34.

The square root of 654410644 is about 25581.4511707213. The cubic root of 654410644 is about 868.1940093843.

The spelling of 654410644 in words is "six hundred fifty-four million, four hundred ten thousand, six hundred forty-four".