654623672 has 8 divisors (see below), whose sum is σ = 1227419400. Its totient is φ = 327311832.

The previous prime is 654623633. The next prime is 654623681. The reversal of 654623672 is 276326456.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

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, 40913972 + ... + 40913987.

It is an arithmetic number, because the mean of its divisors is an integer number (153427425).

Almost surely, 2^654623672 is an apocalyptic number.

It is an amenable number.

654623672 is a deficient number, since it is larger than the sum of its proper divisors (572795728).

654623672 is a wasteful number, since it uses less digits than its factorization.

654623672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81827965 (or 81827961 counting only the distinct ones).

The product of its digits is 362880, while the sum is 41.

The square root of 654623672 is about 25585.6145519313. The cubic root of 654623672 is about 868.2882058801.

The spelling of 654623672 in words is "six hundred fifty-four million, six hundred twenty-three thousand, six hundred seventy-two".