12699744 has 48 divisors (see below), whose sum is σ = 33530112. Its totient is φ = 4208768.

The previous prime is 12699721. The next prime is 12699751. The reversal of 12699744 is 44799621.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×12699744² = 322566995331072, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12699696 and 12699705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24997 + ... + 25499.

It is an arithmetic number, because the mean of its divisors is an integer number (698544).

Almost surely, 2^12699744 is an apocalyptic number.

It is an amenable number.

12699744 is an abundant number, since it is smaller than the sum of its proper divisors (20830368).

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

12699744 is a wasteful number, since it uses less digits than its factorization.

12699744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779 (or 771 counting only the distinct ones).

The product of its digits is 108864, while the sum is 42.

The square root of 12699744 is about 3563.6700183940. The cubic root of 12699744 is about 233.3090877302.

The spelling of 12699744 in words is "twelve million, six hundred ninety-nine thousand, seven hundred forty-four".