694749720 has 128 divisors (see below), whose sum is σ = 2387750400. Its totient is φ = 158416896.

The previous prime is 694749709. The next prime is 694749749. The reversal of 694749720 is 27947496.

It is a self number, because there is not a number n which added to its sum of digits gives 694749720.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 492376 + ... + 493784.

It is an arithmetic number, because the mean of its divisors is an integer number (18654300).

Almost surely, 2^694749720 is an apocalyptic number.

694749720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 694749720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1193875200).

694749720 is an abundant number, since it is smaller than the sum of its proper divisors (1693000680).

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

694749720 is a wasteful number, since it uses less digits than its factorization.

694749720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2017 (or 2013 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 48.

The square root of 694749720 is about 26358.1053947358. The cubic root of 694749720 is about 885.6785501166.

The spelling of 694749720 in words is "six hundred ninety-four million, seven hundred forty-nine thousand, seven hundred twenty".