12905715 has 8 divisors (see below), whose sum is σ = 20649168. Its totient is φ = 6883040.

The previous prime is 12905713. The next prime is 12905723. The reversal of 12905715 is 51750921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12905715 - 2¹ = 12905713 is a prime.

It is a super-2 number, since 2×12905715² = 333114959322450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12905713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 430176 + ... + 430205.

It is an arithmetic number, because the mean of its divisors is an integer number (2581146).

Almost surely, 2^12905715 is an apocalyptic number.

12905715 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12905715 is a deficient number, since it is larger than the sum of its proper divisors (7743453).

12905715 is an equidigital number, since it uses as much as digits as its factorization.

12905715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860389.

The product of its (nonzero) digits is 3150, while the sum is 30.

The square root of 12905715 is about 3592.4525049052. The cubic root of 12905715 is about 234.5636387096.

The spelling of 12905715 in words is "twelve million, nine hundred five thousand, seven hundred fifteen".