80753666 has 12 divisors (see below), whose sum is σ = 140907078. Its totient is φ = 34608672.

The previous prime is 80753663. The next prime is 80753681. The reversal of 80753666 is 66635708.

It can be written as a sum of positive squares in only one way, i.e., 76195441 + 4558225 = 8729^2 + 2135^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80753663) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 411911 + ... + 412106.

Almost surely, 2^80753666 is an apocalyptic number.

80753666 is a deficient number, since it is larger than the sum of its proper divisors (60153412).

80753666 is a wasteful number, since it uses less digits than its factorization.

80753666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824033 (or 824026 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 80753666 is about 8986.3043571871. The cubic root of 80753666 is about 432.2358144689.

The spelling of 80753666 in words is "eighty million, seven hundred fifty-three thousand, six hundred sixty-six".