673426656 has 96 divisors (see below), whose sum is σ = 2244775680. Its totient is φ = 192405888.

The previous prime is 673426597. The next prime is 673426657. The reversal of 673426656 is 656624376.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×673426656² = 907006922022684672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673426657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49626 + ... + 61721.

It is an arithmetic number, because the mean of its divisors is an integer number (23383080).

Almost surely, 2^673426656 is an apocalyptic number.

It is an amenable number.

673426656 is an abundant number, since it is smaller than the sum of its proper divisors (1571349024).

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

673426656 is a wasteful number, since it uses less digits than its factorization.

673426656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111373 (or 111359 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 45.

The square root of 673426656 is about 25950.4654293521. The cubic root of 673426656 is about 876.5232377907.

The spelling of 673426656 in words is "six hundred seventy-three million, four hundred twenty-six thousand, six hundred fifty-six".