80516690 has 8 divisors (see below), whose sum is σ = 144930060. Its totient is φ = 32206672.

The previous prime is 80516669. The next prime is 80516701. The reversal of 80516690 is 9661508.

It can be written as a sum of positive squares in 2 ways, for example, as 80263681 + 253009 = 8959^2 + 503^2 .

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

It is a super-2 number, since 2×80516690² = 12965874737112200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 80516690.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4025825 + ... + 4025844.

Almost surely, 2^80516690 is an apocalyptic number.

80516690 is a deficient number, since it is larger than the sum of its proper divisors (64413370).

80516690 is a wasteful number, since it uses less digits than its factorization.

80516690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8051676.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 80516690 is about 8973.1092715959. The cubic root of 80516690 is about 431.8125937529.

It can be divided in two parts, 8051 and 6690, that added together give a palindrome (14741).

The spelling of 80516690 in words is "eighty million, five hundred sixteen thousand, six hundred ninety".