80945215 has 16 divisors (see below), whose sum is σ = 104797728. Its totient is φ = 59665536.

The previous prime is 80945213. The next prime is 80945219. The reversal of 80945215 is 51254908.

80945215 = 2316² + 2317² + ... + 2330².

It is a cyclic number.

It is not a de Polignac number, because 80945215 - 2¹ = 80945213 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 (80945213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58269 + ... + 59641.

It is an arithmetic number, because the mean of its divisors is an integer number (6549858).

Almost surely, 2^80945215 is an apocalyptic number.

80945215 is a deficient number, since it is larger than the sum of its proper divisors (23852513).

80945215 is a wasteful number, since it uses less digits than its factorization.

80945215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2298.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 80945215 is about 8996.9558740721. The cubic root of 80945215 is about 432.5773013845.

The spelling of 80945215 in words is "eighty million, nine hundred forty-five thousand, two hundred fifteen".