673936656 has 40 divisors (see below), whose sum is σ = 1748504160. Its totient is φ = 223677696.

The previous prime is 673936651. The next prime is 673936691. The reversal of 673936656 is 656639376.

It is a super-3 number, since 3×673936656³ (a number of 27 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 673936599 and 673936608.

It is not an unprimeable number, because it can be changed into a prime (673936651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18946 + ... + 41313.

It is an arithmetic number, because the mean of its divisors is an integer number (43712604).

Almost surely, 2^673936656 is an apocalyptic number.

It is an amenable number.

673936656 is an abundant number, since it is smaller than the sum of its proper divisors (1074567504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

673936656 is a wasteful number, since it uses less digits than its factorization.

673936656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60503 (or 60497 counting only the distinct ones).

The product of its digits is 3674160, while the sum is 51.

The square root of 673936656 is about 25960.2899829721. The cubic root of 673936656 is about 876.7444517107.

The spelling of 673936656 in words is "six hundred seventy-three million, nine hundred thirty-six thousand, six hundred fifty-six".