13610749 has 4 divisors (see below), whose sum is σ = 13751164. Its totient is φ = 13470336.

The previous prime is 13610743. The next prime is 13610759. The reversal of 13610749 is 94701631.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10771524 + 2839225 = 3282^2 + 1685^2 .

It is a cyclic number.

It is not a de Polignac number, because 13610749 - 2¹³ = 13602557 is a prime.

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 13610749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13610743) 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, 70062 + ... + 70255.

It is an arithmetic number, because the mean of its divisors is an integer number (3437791).

Almost surely, 2^13610749 is an apocalyptic number.

It is an amenable number.

13610749 is a deficient number, since it is larger than the sum of its proper divisors (140415).

13610749 is an equidigital number, since it uses as much as digits as its factorization.

13610749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140414.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 13610749 is about 3689.2748609991. The cubic root of 13610749 is about 238.7595078585.

The spelling of 13610749 in words is "thirteen million, six hundred ten thousand, seven hundred forty-nine".