80665507 has 8 divisors (see below), whose sum is σ = 91442960. Its totient is φ = 70541280.

The previous prime is 80665483. The next prime is 80665517. The reversal of 80665507 is 70556608.

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 80665507 - 2²³ = 72276899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80665517) 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, 163044 + ... + 163537.

It is an arithmetic number, because the mean of its divisors is an integer number (11430370).

Almost surely, 2^80665507 is an apocalyptic number.

80665507 is a deficient number, since it is larger than the sum of its proper divisors (10777453).

80665507 is a wasteful number, since it uses less digits than its factorization.

80665507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326613.

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 80665507 is about 8981.3978310728. The cubic root of 80665507 is about 432.0784661853.

The spelling of 80665507 in words is "eighty million, six hundred sixty-five thousand, five hundred seven".