13061915 has 4 divisors (see below), whose sum is σ = 15674304. Its totient is φ = 10449528.

The previous prime is 13061891. The next prime is 13061921. The reversal of 13061915 is 51916031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13061915 - 2¹⁰ = 13060891 is a prime.

It is a super-2 number, since 2×13061915² = 341227246934450, which contains 22 as substring.

It is a Duffinian 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, 1306187 + ... + 1306196.

It is an arithmetic number, because the mean of its divisors is an integer number (3918576).

Almost surely, 2^13061915 is an apocalyptic number.

13061915 is a deficient number, since it is larger than the sum of its proper divisors (2612389).

13061915 is an equidigital number, since it uses as much as digits as its factorization.

13061915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2612388.

The product of its (nonzero) digits is 810, while the sum is 26.

The square root of 13061915 is about 3614.1271422018. The cubic root of 13061915 is about 235.5061671686.

Adding to 13061915 its reverse (51916031), we get a palindrome (64977946).

The spelling of 13061915 in words is "thirteen million, sixty-one thousand, nine hundred fifteen".