80705797 has 8 divisors (see below), whose sum is σ = 83581344. Its totient is φ = 77875728.

The previous prime is 80705791. The next prime is 80705809. The reversal of 80705797 is 79750708.

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

It is a cyclic number.

It is not a de Polignac number, because 80705797 - 2³ = 80705789 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80705791) 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, 7738 + ... + 14875.

It is an arithmetic number, because the mean of its divisors is an integer number (10447668).

Almost surely, 2^80705797 is an apocalyptic number.

It is an amenable number.

80705797 is a deficient number, since it is larger than the sum of its proper divisors (2875547).

80705797 is a wasteful number, since it uses less digits than its factorization.

80705797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22739.

The product of its (nonzero) digits is 123480, while the sum is 43.

The square root of 80705797 is about 8983.6405204126. The cubic root of 80705797 is about 432.1503909544.

The spelling of 80705797 in words is "eighty million, seven hundred five thousand, seven hundred ninety-seven".