80646005 has 8 divisors (see below), whose sum is σ = 105573024. Its totient is φ = 58651600.

The previous prime is 80645969. The next prime is 80646017. The reversal of 80646005 is 50064608.

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

It is not a de Polignac number, because 80646005 - 2¹⁶ = 80580469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 733091 + ... + 733200.

It is an arithmetic number, because the mean of its divisors is an integer number (13196628).

Almost surely, 2^80646005 is an apocalyptic number.

It is an amenable number.

80646005 is a deficient number, since it is larger than the sum of its proper divisors (24927019).

80646005 is a wasteful number, since it uses less digits than its factorization.

80646005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1466307.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 80646005 is about 8980.3120769826. The cubic root of 80646005 is about 432.0436430673.

The spelling of 80646005 in words is "eighty million, six hundred forty-six thousand, five".