80407705 has 32 divisors (see below), whose sum is σ = 118561536. Its totient is φ = 51093504.

The previous prime is 80407703. The next prime is 80407711. The reversal of 80407705 is 50770408.

It is a happy number.

It is not a de Polignac number, because 80407705 - 2¹ = 80407703 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80407703) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38857 + ... + 40873.

It is an arithmetic number, because the mean of its divisors is an integer number (3705048).

Almost surely, 2^80407705 is an apocalyptic number.

80407705 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

80407705 is a deficient number, since it is larger than the sum of its proper divisors (38153831).

80407705 is a wasteful number, since it uses less digits than its factorization.

80407705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2113.

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 80407705 is about 8967.0343480997. The cubic root of 80407705 is about 431.6176762147.

The spelling of 80407705 in words is "eighty million, four hundred seven thousand, seven hundred five".