80644266 has 24 divisors (see below), whose sum is σ = 174960864. Its totient is φ = 26845800.

The previous prime is 80644259. The next prime is 80644271. The reversal of 80644266 is 66244608.

It is a happy number.

80644266 is a `hidden beast` number, since 8 + 0 + 644 + 2 + 6 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 80644266.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13441 + ... + 18491.

It is an arithmetic number, because the mean of its divisors is an integer number (7290036).

Almost surely, 2^80644266 is an apocalyptic number.

80644266 is an abundant number, since it is smaller than the sum of its proper divisors (94316598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80644266 is a wasteful number, since it uses less digits than its factorization.

80644266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5946 (or 5943 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 80644266 is about 8980.2152535449. The cubic root of 80644266 is about 432.0405376054.

The spelling of 80644266 in words is "eighty million, six hundred forty-four thousand, two hundred sixty-six".