12787995 has 64 divisors (see below), whose sum is σ = 24385536. Its totient is φ = 5652480.

The previous prime is 12787993. The next prime is 12787997. The reversal of 12787995 is 59978721.

It is an interprime number because it is at equal distance from previous prime (12787993) and next prime (12787997).

It is not a de Polignac number, because 12787995 - 2¹ = 12787993 is a prime.

It is a super-2 number, since 2×12787995² = 327065632240050, which contains 22 as substring.

Its product of digits (317520) is a multiple of the sum of its prime divisors (180).

It is not an unprimeable number, because it can be changed into a prime (12787993) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 131787 + ... + 131883.

It is an arithmetic number, because the mean of its divisors is an integer number (381024).

Almost surely, 2^12787995 is an apocalyptic number.

12787995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12787995 is a deficient number, since it is larger than the sum of its proper divisors (11597541).

12787995 is a wasteful number, since it uses less digits than its factorization.

12787995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180.

The product of its digits is 317520, while the sum is 48.

The square root of 12787995 is about 3576.0306206743. The cubic root of 12787995 is about 233.8482652802.

The spelling of 12787995 in words is "twelve million, seven hundred eighty-seven thousand, nine hundred ninety-five".