12799775 has 6 divisors (see below), whose sum is σ = 15871752. Its totient is φ = 10239800.

The previous prime is 12799769. The next prime is 12799781. The reversal of 12799775 is 57799721.

It is an interprime number because it is at equal distance from previous prime (12799769) and next prime (12799781).

It is not a de Polignac number, because 12799775 - 2¹⁸ = 12537631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 255971 + ... + 256020.

It is an arithmetic number, because the mean of its divisors is an integer number (2645292).

Almost surely, 2^12799775 is an apocalyptic number.

12799775 is a deficient number, since it is larger than the sum of its proper divisors (3071977).

12799775 is an equidigital number, since it uses as much as digits as its factorization.

12799775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512001 (or 511996 counting only the distinct ones).

The product of its digits is 277830, while the sum is 47.

The square root of 12799775 is about 3577.6773191555. The cubic root of 12799775 is about 233.9200484157.

The spelling of 12799775 in words is "twelve million, seven hundred ninety-nine thousand, seven hundred seventy-five".