699561312 has 24 divisors (see below), whose sum is σ = 1836348696. Its totient is φ = 233187072.

The previous prime is 699561299. The next prime is 699561329. The reversal of 699561312 is 213165996.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×699561312² = 978772058494322688, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3643453 + ... + 3643644.

It is an arithmetic number, because the mean of its divisors is an integer number (76514529).

Almost surely, 2^699561312 is an apocalyptic number.

It is an amenable number.

699561312 is an abundant number, since it is smaller than the sum of its proper divisors (1136787384).

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

699561312 is a wasteful number, since it uses less digits than its factorization.

699561312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7287110 (or 7287102 counting only the distinct ones).

The product of its digits is 87480, while the sum is 42.

The square root of 699561312 is about 26449.2213874057. The cubic root of 699561312 is about 887.7184806817.

The spelling of 699561312 in words is "six hundred ninety-nine million, five hundred sixty-one thousand, three hundred twelve".