126899664 has 20 divisors (see below), whose sum is σ = 327824256. Its totient is φ = 42299872.

The previous prime is 126899659. The next prime is 126899681. The reversal of 126899664 is 466998621.

It is a super-2 number, since 2×126899664² = 32207049446625792, 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, 1321824 + ... + 1321919.

Almost surely, 2^126899664 is an apocalyptic number.

It is an amenable number.

126899664 is an abundant number, since it is smaller than the sum of its proper divisors (200924592).

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

126899664 is a wasteful number, since it uses less digits than its factorization.

126899664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2643754 (or 2643748 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 51.

The square root of 126899664 is about 11264.9750998393. The cubic root of 126899664 is about 502.5201615633.

The spelling of 126899664 in words is "one hundred twenty-six million, eight hundred ninety-nine thousand, six hundred sixty-four".