13630761 has 10 divisors (see below), whose sum is σ = 20362122. Its totient is φ = 9087120.

The previous prime is 13630741. The next prime is 13630769. The reversal of 13630761 is 16703631.

It can be written as a sum of positive squares in only one way, i.e., 12960000 + 670761 = 3600^2 + 819^2 .

It is a de Polignac number, because none of the positive numbers 2^k-13630761 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (13630769) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 84060 + ... + 84221.

Almost surely, 2^13630761 is an apocalyptic number.

It is an amenable number.

13630761 is a deficient number, since it is larger than the sum of its proper divisors (6731361).

13630761 is an equidigital number, since it uses as much as digits as its factorization.

13630761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168293 (or 168284 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 13630761 is about 3691.9860508946. The cubic root of 13630761 is about 238.8764672667.

The spelling of 13630761 in words is "thirteen million, six hundred thirty thousand, seven hundred sixty-one".