15264661 has 4 divisors (see below), whose sum is σ = 15272812. Its totient is φ = 15256512.

The previous prime is 15264659. The next prime is 15264673. The reversal of 15264661 is 16646251.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 15062161 + 202500 = 3881^2 + 450^2 .

It is a cyclic number.

It is not a de Polignac number, because 15264661 - 2¹ = 15264659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15264611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 301 + ... + 5533.

It is an arithmetic number, because the mean of its divisors is an integer number (3818203).

Almost surely, 2^15264661 is an apocalyptic number.

It is an amenable number.

15264661 is a deficient number, since it is larger than the sum of its proper divisors (8151).

15264661 is an equidigital number, since it uses as much as digits as its factorization.

15264661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8150.

The product of its digits is 8640, while the sum is 31.

The square root of 15264661 is about 3907.0015357048. The cubic root of 15264661 is about 248.0632263785.

The spelling of 15264661 in words is "fifteen million, two hundred sixty-four thousand, six hundred sixty-one".