13612621 has 6 divisors (see below), whose sum is σ = 14962766. Its totient is φ = 12375000.

The previous prime is 13612609. The next prime is 13612667. The reversal of 13612621 is 12621631.

It can be written as a sum of positive squares in only one way, i.e., 8820900 + 4791721 = 2970^2 + 2189^2 .

It is not a de Polignac number, because 13612621 - 2¹¹ = 13610573 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13612592 and 13612601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13612681) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 56130 + ... + 56371.

Almost surely, 2^13612621 is an apocalyptic number.

13612621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13612621 is a deficient number, since it is larger than the sum of its proper divisors (1350145).

13612621 is a wasteful number, since it uses less digits than its factorization.

13612621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112523 (or 112512 counting only the distinct ones).

The product of its digits is 432, while the sum is 22.

The square root of 13612621 is about 3689.5285606700. The cubic root of 13612621 is about 238.7704535532.

The spelling of 13612621 in words is "thirteen million, six hundred twelve thousand, six hundred twenty-one".