13021677 has 12 divisors (see below), whose sum is σ = 19915740. Its totient is φ = 8170368.

The previous prime is 13021663. The next prime is 13021681. The reversal of 13021677 is 77612031.

It can be written as a sum of positive squares in 2 ways, for example, as 7918596 + 5103081 = 2814^2 + 2259^2 .

It is not a de Polignac number, because 13021677 - 2⁷ = 13021549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13021677.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13021607) 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, 42402 + ... + 42707.

It is an arithmetic number, because the mean of its divisors is an integer number (1659645).

Almost surely, 2^13021677 is an apocalyptic number.

13021677 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

13021677 is a deficient number, since it is larger than the sum of its proper divisors (6894063).

13021677 is a wasteful number, since it uses less digits than its factorization.

13021677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85132 (or 85129 counting only the distinct ones).

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

The square root of 13021677 is about 3608.5560824241. The cubic root of 13021677 is about 235.2640882032.

The spelling of 13021677 in words is "thirteen million, twenty-one thousand, six hundred seventy-seven".