80697705 has 32 divisors (see below), whose sum is σ = 142000128. Its totient is φ = 38808000.

The previous prime is 80697697. The next prime is 80697709. The reversal of 80697705 is 50779608.

It is not a de Polignac number, because 80697705 - 2³ = 80697697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80697709) 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, 19030 + ... + 22880.

It is an arithmetic number, because the mean of its divisors is an integer number (4437504).

Almost surely, 2^80697705 is an apocalyptic number.

It is an amenable number.

80697705 is a deficient number, since it is larger than the sum of its proper divisors (61302423).

80697705 is a wasteful number, since it uses less digits than its factorization.

80697705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3997.

The product of its (nonzero) digits is 105840, while the sum is 42.

The square root of 80697705 is about 8983.1901349131. The cubic root of 80697705 is about 432.1359472259.

The spelling of 80697705 in words is "eighty million, six hundred ninety-seven thousand, seven hundred five".