623471856 has 80 divisors (see below), whose sum is σ = 1920781824. Its totient is φ = 170387712.

The previous prime is 623471839. The next prime is 623471861. The reversal of 623471856 is 658174326.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32611 + ... + 48066.

Almost surely, 2^623471856 is an apocalyptic number.

It is an amenable number.

623471856 is an abundant number, since it is smaller than the sum of its proper divisors (1297309968).

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

623471856 is a wasteful number, since it uses less digits than its factorization.

623471856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80718 (or 80712 counting only the distinct ones).

The product of its digits is 241920, while the sum is 42.

The square root of 623471856 is about 24969.4184153336. The cubic root of 623471856 is about 854.2905807850.

The spelling of 623471856 in words is "six hundred twenty-three million, four hundred seventy-one thousand, eight hundred fifty-six".