623478680 has 32 divisors (see below), whose sum is σ = 1530357840. Its totient is φ = 226719360.

The previous prime is 623478671. The next prime is 623478701. The reversal of 623478680 is 86874326.

It is a Harshad number since it is a multiple of its sum of digits (44).

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 in 7 ways as a sum of consecutive naturals, for example, 708059 + ... + 708938.

Almost surely, 2^623478680 is an apocalyptic number.

It is an amenable number.

623478680 is an abundant number, since it is smaller than the sum of its proper divisors (906879160).

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

623478680 is a wasteful number, since it uses less digits than its factorization.

623478680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1417019 (or 1417015 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 44.

The square root of 623478680 is about 24969.5550621151. Note that the first 3 decimals coincide. The cubic root of 623478680 is about 854.2936975563.

The spelling of 623478680 in words is "six hundred twenty-three million, four hundred seventy-eight thousand, six hundred eighty".