673686785400 has 96 divisors (see below), whose sum is σ = 2179230341760. Its totient is φ = 171838944640.

The previous prime is 673686785363. The next prime is 673686785449. The reversal of 673686785400 is 4587686376.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24395142 + ... + 24422741.

It is an arithmetic number, because the mean of its divisors is an integer number (22700316060).

Almost surely, 2^673686785400 is an apocalyptic number.

673686785400 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

673686785400 is an abundant number, since it is smaller than the sum of its proper divisors (1505543556360).

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

673686785400 is a wasteful number, since it uses less digits than its factorization.

673686785400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48817925 (or 48817916 counting only the distinct ones).

The product of its (nonzero) digits is 40642560, while the sum is 60.

The spelling of 673686785400 in words is "six hundred seventy-three billion, six hundred eighty-six million, seven hundred eighty-five thousand, four hundred".