8013689 has 2 divisors, whose sum is σ = 8013690. Its totient is φ = 8013688.

The previous prime is 8013679. The next prime is 8013697. The reversal of 8013689 is 9863108.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6786025 + 1227664 = 2605^2 + 1108^2 .

It is a cyclic number.

It is not a de Polignac number, because 8013689 - 2⁸ = 8013433 is a prime.

It is a super-2 number, since 2×8013689² = 128438422777442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8013619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4006844 + 4006845.

It is an arithmetic number, because the mean of its divisors is an integer number (4006845).

Almost surely, 2^8013689 is an apocalyptic number.

It is an amenable number.

8013689 is a deficient number, since it is larger than the sum of its proper divisors (1).

8013689 is an equidigital number, since it uses as much as digits as its factorization.

8013689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 8013689 is about 2830.8459866266. The cubic root of 8013689 is about 200.1140099963.

The spelling of 8013689 in words is "eight million, thirteen thousand, six hundred eighty-nine".