80669031 has 4 divisors (see below), whose sum is σ = 107558712. Its totient is φ = 53779352.

The previous prime is 80669009. The next prime is 80669077. The reversal of 80669031 is 13096608.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80669031 is a prime.

It is a super-2 number, since 2×80669031² = 13014985124957922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 80668983 and 80669001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80669081) 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, 13444836 + ... + 13444841.

It is an arithmetic number, because the mean of its divisors is an integer number (26889678).

Almost surely, 2^80669031 is an apocalyptic number.

80669031 is a deficient number, since it is larger than the sum of its proper divisors (26889681).

80669031 is a wasteful number, since it uses less digits than its factorization.

80669031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26889680.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 80669031 is about 8981.5940122007. The cubic root of 80669031 is about 432.0847581037.

The spelling of 80669031 in words is "eighty million, six hundred sixty-nine thousand, thirty-one".