13618671 has 12 divisors (see below), whose sum is σ = 19959576. Its totient is φ = 8253520.

The previous prime is 13618667. The next prime is 13618679. The reversal of 13618671 is 17681631.

It is not a de Polignac number, because 13618671 - 2² = 13618667 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13618679) 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, 18396 + ... + 19121.

It is an arithmetic number, because the mean of its divisors is an integer number (1663298).

Almost surely, 2^13618671 is an apocalyptic number.

13618671 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13618671 is a deficient number, since it is larger than the sum of its proper divisors (6340905).

13618671 is a wasteful number, since it uses less digits than its factorization.

13618671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37542 (or 37531 counting only the distinct ones).

The product of its digits is 6048, while the sum is 33.

The square root of 13618671 is about 3690.3483575402. The cubic root of 13618671 is about 238.8058214002.

The spelling of 13618671 in words is "thirteen million, six hundred eighteen thousand, six hundred seventy-one".