80666748 has 36 divisors (see below), whose sum is σ = 210941640. Its totient is φ = 25961376.

The previous prime is 80666741. The next prime is 80666759. The reversal of 80666748 is 84766608.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80666741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37590 + ... + 39677.

It is an arithmetic number, because the mean of its divisors is an integer number (5859490).

Almost surely, 2^80666748 is an apocalyptic number.

It is an amenable number.

80666748 is an abundant number, since it is smaller than the sum of its proper divisors (130274892).

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

80666748 is a wasteful number, since it uses less digits than its factorization.

80666748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77306 (or 77301 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 80666748 is about 8981.4669180485. The cubic root of 80666748 is about 432.0806819471.

The spelling of 80666748 in words is "eighty million, six hundred sixty-six thousand, seven hundred forty-eight".