80717679 has 24 divisors (see below), whose sum is σ = 133491072. Its totient is φ = 46040400.

The previous prime is 80717669. The next prime is 80717711. The reversal of 80717679 is 97671708.

It is a happy number.

It is not a de Polignac number, because 80717679 - 2⁷ = 80717551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80717639) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54904 + ... + 56354.

It is an arithmetic number, because the mean of its divisors is an integer number (5562128).

Almost surely, 2^80717679 is an apocalyptic number.

80717679 is a deficient number, since it is larger than the sum of its proper divisors (52773393).

80717679 is a wasteful number, since it uses less digits than its factorization.

80717679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2347 (or 2344 counting only the distinct ones).

The product of its (nonzero) digits is 148176, while the sum is 45.

The square root of 80717679 is about 8984.3018092671. The cubic root of 80717679 is about 432.1715978530.

The spelling of 80717679 in words is "eighty million, seven hundred seventeen thousand, six hundred seventy-nine".