80811669 has 8 divisors (see below), whose sum is σ = 107795232. Its totient is φ = 53851280.

The previous prime is 80811667. The next prime is 80811671. The reversal of 80811669 is 96611808.

It is an interprime number because it is at equal distance from previous prime (80811667) and next prime (80811671).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80811669 - 2¹ = 80811667 is a prime.

It is a super-2 number, since 2×80811669² = 13061051693131122, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80811667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5482 + ... + 13844.

It is an arithmetic number, because the mean of its divisors is an integer number (13474404).

Almost surely, 2^80811669 is an apocalyptic number.

It is an amenable number.

80811669 is a deficient number, since it is larger than the sum of its proper divisors (26983563).

80811669 is a wasteful number, since it uses less digits than its factorization.

80811669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11587.

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 80811669 is about 8989.5310778705. The cubic root of 80811669 is about 432.3392771557.

The spelling of 80811669 in words is "eighty million, eight hundred eleven thousand, six hundred sixty-nine".