12699616 has 24 divisors (see below), whose sum is σ = 25242840. Its totient is φ = 6288768.

The previous prime is 12699613. The next prime is 12699637. The reversal of 12699616 is 61699621.

12699616 = 16² + 17² + ... + 336².

It is a super-2 number, since 2×12699616² = 322560493094912, which contains 22 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12699613) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1570 + ... + 5278.

It is an arithmetic number, because the mean of its divisors is an integer number (1051785).

Almost surely, 2^12699616 is an apocalyptic number.

12699616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12699616 is a deficient number, since it is larger than the sum of its proper divisors (12543224).

12699616 is a wasteful number, since it uses less digits than its factorization.

12699616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3826 (or 3818 counting only the distinct ones).

The product of its digits is 34992, while the sum is 40.

The square root of 12699616 is about 3563.6520593346. The cubic root of 12699616 is about 233.3083038912.

The spelling of 12699616 in words is "twelve million, six hundred ninety-nine thousand, six hundred sixteen".