13870771 has 4 divisors (see below), whose sum is σ = 14473872. Its totient is φ = 13267672.

The previous prime is 13870763. The next prime is 13870799. The reversal of 13870771 is 17707831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17707831 = 163 ⋅108637.

It is a cyclic number.

It is not a de Polignac number, because 13870771 - 2³ = 13870763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13870721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 301516 + ... + 301561.

It is an arithmetic number, because the mean of its divisors is an integer number (3618468).

Almost surely, 2^13870771 is an apocalyptic number.

13870771 is a deficient number, since it is larger than the sum of its proper divisors (603101).

13870771 is an equidigital number, since it uses as much as digits as its factorization.

13870771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603100.

The product of its (nonzero) digits is 8232, while the sum is 34.

The square root of 13870771 is about 3724.3483993848. The cubic root of 13870771 is about 240.2703608325.

It can be divided in two parts, 13870 and 771, that added together give a palindrome (14641).

The spelling of 13870771 in words is "thirteen million, eight hundred seventy thousand, seven hundred seventy-one".