80518646 has 16 divisors (see below), whose sum is σ = 130216464. Its totient is φ = 37120224.

The previous prime is 80518639. The next prime is 80518649. The reversal of 80518646 is 64681508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80518649) 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, 44165 + ... + 45951.

It is an arithmetic number, because the mean of its divisors is an integer number (8138529).

Almost surely, 2^80518646 is an apocalyptic number.

80518646 is a deficient number, since it is larger than the sum of its proper divisors (49697818).

80518646 is a wasteful number, since it uses less digits than its factorization.

80518646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3535.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 80518646 is about 8973.2182632543. The cubic root of 80518646 is about 431.8160904134.

The spelling of 80518646 in words is "eighty million, five hundred eighteen thousand, six hundred forty-six".