678480736 has 24 divisors (see below), whose sum is σ = 1346284800. Its totient is φ = 336567168.

The previous prime is 678480697. The next prime is 678480739. The reversal of 678480736 is 637084876.

It is a super-2 number, since 2×678480736² = 920672218246203392, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 678480736.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678480739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79411 + ... + 87538.

It is an arithmetic number, because the mean of its divisors is an integer number (56095200).

Almost surely, 2^678480736 is an apocalyptic number.

It is an amenable number.

678480736 is a deficient number, since it is larger than the sum of its proper divisors (667804064).

678480736 is a wasteful number, since it uses less digits than its factorization.

678480736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167086 (or 167078 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 49.

The square root of 678480736 is about 26047.6627742299. The cubic root of 678480736 is about 878.7105495274.

The spelling of 678480736 in words is "six hundred seventy-eight million, four hundred eighty thousand, seven hundred thirty-six".