13621707 has 12 divisors (see below), whose sum is σ = 21464664. Its totient is φ = 8255520.

The previous prime is 13621697. The next prime is 13621723. The reversal of 13621707 is 70712631.

13621707 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13621707 - 2⁴ = 13621691 is a prime.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (13621757) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68698 + ... + 68895.

It is an arithmetic number, because the mean of its divisors is an integer number (1788722).

Almost surely, 2^13621707 is an apocalyptic number.

13621707 is a deficient number, since it is larger than the sum of its proper divisors (7842957).

13621707 is a wasteful number, since it uses less digits than its factorization.

13621707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137610 (or 137607 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 13621707 is about 3690.7596778983. The cubic root of 13621707 is about 238.8235656819.

The spelling of 13621707 in words is "thirteen million, six hundred twenty-one thousand, seven hundred seven".