80745799 has 8 divisors (see below), whose sum is σ = 81475200. Its totient is φ = 80019576.

The previous prime is 80745781. The next prime is 80745809. The reversal of 80745799 is 99754708.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80745799 is a prime.

It is a super-2 number, since 2×80745799² = 13039768112296802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80745739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97224 + ... + 98050.

It is an arithmetic number, because the mean of its divisors is an integer number (10184400).

Almost surely, 2^80745799 is an apocalyptic number.

80745799 is a deficient number, since it is larger than the sum of its proper divisors (729401).

80745799 is a wasteful number, since it uses less digits than its factorization.

80745799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1589.

The product of its (nonzero) digits is 635040, while the sum is 49.

The square root of 80745799 is about 8985.8666248726. The cubic root of 80745799 is about 432.2217779149.

The spelling of 80745799 in words is "eighty million, seven hundred forty-five thousand, seven hundred ninety-nine".