13620753 has 6 divisors (see below), whose sum is σ = 19674434. Its totient is φ = 9080496.

The previous prime is 13620727. The next prime is 13620781. The reversal of 13620753 is 35702631.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11512449 + 2108304 = 3393^2 + 1452^2 .

It is not a de Polignac number, because 13620753 - 2⁵ = 13620721 is a prime.

It is a super-3 number, since 3×13620753³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (13620703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 756700 + ... + 756717.

Almost surely, 2^13620753 is an apocalyptic number.

It is an amenable number.

13620753 is a deficient number, since it is larger than the sum of its proper divisors (6053681).

13620753 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 8 representation: 13620753 = (63753021)₈.

13620753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1513423 (or 1513420 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 13620753 is about 3690.6304339503. The cubic root of 13620753 is about 238.8179901937.

The spelling of 13620753 in words is "thirteen million, six hundred twenty thousand, seven hundred fifty-three".