694543680 has 112 divisors (see below), whose sum is σ = 2450226240. Its totient is φ = 185209344.

The previous prime is 694543679. The next prime is 694543709. The reversal of 694543680 is 86345496.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 15 ways as a sum of consecutive naturals, for example, 31554 + ... + 48833.

It is an arithmetic number, because the mean of its divisors is an integer number (21877020).

Almost surely, 2^694543680 is an apocalyptic number.

694543680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

694543680 is an abundant number, since it is smaller than the sum of its proper divisors (1755682560).

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

694543680 is a wasteful number, since it uses less digits than its factorization.

694543680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80413 (or 80397 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The square root of 694543680 is about 26354.1966297590. The cubic root of 694543680 is about 885.5909870485.

It can be divided in two parts, 6945 and 43680, that added together give a 4-th power (50625 = 15⁴).

The spelling of 694543680 in words is "six hundred ninety-four million, five hundred forty-three thousand, six hundred eighty".