80664551 has 8 divisors (see below), whose sum is σ = 90376464. Its totient is φ = 71349120.

The previous prime is 80664539. The next prime is 80664587. The reversal of 80664551 is 15546608.

It is a happy number.

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 80664551 - 2⁶ = 80664487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80664751) 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, 98690 + ... + 99503.

It is an arithmetic number, because the mean of its divisors is an integer number (11297058).

Almost surely, 2^80664551 is an apocalyptic number.

80664551 is a deficient number, since it is larger than the sum of its proper divisors (9711913).

80664551 is a wasteful number, since it uses less digits than its factorization.

80664551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198241.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 80664551 is about 8981.3446098009. The cubic root of 80664551 is about 432.0767592656.

The spelling of 80664551 in words is "eighty million, six hundred sixty-four thousand, five hundred fifty-one".