13613764 has 6 divisors (see below), whose sum is σ = 23824094. Its totient is φ = 6806880.

The previous prime is 13613741. The next prime is 13613767. The reversal of 13613764 is 46731631.

It can be written as a sum of positive squares in only one way, i.e., 6812100 + 6801664 = 2610^2 + 2608^2 .

It is not an unprimeable number, because it can be changed into a prime (13613767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1701717 + ... + 1701724.

Almost surely, 2^13613764 is an apocalyptic number.

It is an amenable number.

13613764 is a deficient number, since it is larger than the sum of its proper divisors (10210330).

13613764 is a wasteful number, since it uses less digits than its factorization.

13613764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3403445 (or 3403443 counting only the distinct ones).

The product of its digits is 9072, while the sum is 31.

The square root of 13613764 is about 3689.6834552574. The cubic root of 13613764 is about 238.7771362484. Note that the first 3 decimals are identical.

The spelling of 13613764 in words is "thirteen million, six hundred thirteen thousand, seven hundred sixty-four".