80664553 has 4 divisors (see below), whose sum is σ = 81447808. Its totient is φ = 79881300.

The previous prime is 80664539. The next prime is 80664587. The reversal of 80664553 is 35546608.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80664553 - 2¹³ = 80656361 is a prime.

It is a super-2 number, since 2×80664553² = 13013540221379618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80664503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 391473 + ... + 391678.

It is an arithmetic number, because the mean of its divisors is an integer number (20361952).

Almost surely, 2^80664553 is an apocalyptic number.

It is an amenable number.

80664553 is a deficient number, since it is larger than the sum of its proper divisors (783255).

80664553 is a wasteful number, since it uses less digits than its factorization.

80664553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783254.

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 80664553 is about 8981.3447211428. The cubic root of 80664553 is about 432.0767628365.

The spelling of 80664553 in words is "eighty million, six hundred sixty-four thousand, five hundred fifty-three".