699999912 has 48 divisors (see below), whose sum is σ = 1961212500. Its totient is φ = 225286656.

The previous prime is 699999907. The next prime is 699999913. The reversal of 699999912 is 219999996.

It can be written as a sum of positive squares in 2 ways, for example, as 643839876 + 56160036 = 25374^2 + 7494^2 .

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 699999912.

It is not an unprimeable number, because it can be changed into a prime (699999913) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 165537 + ... + 169712.

Almost surely, 2^699999912 is an apocalyptic number.

It is an amenable number.

699999912 is an abundant number, since it is smaller than the sum of its proper divisors (1261212588).

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

699999912 is a wasteful number, since it uses less digits than its factorization.

699999912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335290 (or 335283 counting only the distinct ones).

The product of its digits is 6377292, while the sum is 63.

The square root of 699999912 is about 26457.5114476022. The cubic root of 699999912 is about 887.9039645352.

The spelling of 699999912 in words is "six hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred twelve".