12878707 has 6 divisors (see below), whose sum is σ = 13681148. Its totient is φ = 12120864.

The previous prime is 12878699. The next prime is 12878729. The reversal of 12878707 is 70787821.

It is a happy number.

It is not a de Polignac number, because 12878707 - 2³ = 12878699 is a prime.

It is a super-2 number, since 2×12878707² = 331722187983698, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12878707.

It is not an unprimeable number, because it can be changed into a prime (12878737) 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 5 ways as a sum of consecutive naturals, for example, 21993 + ... + 22570.

Almost surely, 2^12878707 is an apocalyptic number.

12878707 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12878707 is a deficient number, since it is larger than the sum of its proper divisors (802441).

12878707 is an equidigital number, since it uses as much as digits as its factorization.

12878707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44597 (or 44580 counting only the distinct ones).

The product of its (nonzero) digits is 43904, while the sum is 40.

The square root of 12878707 is about 3588.6915442818. The cubic root of 12878707 is about 234.3998993873.

The spelling of 12878707 in words is "twelve million, eight hundred seventy-eight thousand, seven hundred seven".