79687278697 has 8 divisors (see below), whose sum is σ = 85834292544. Its totient is φ = 73542725328.

The previous prime is 79687278667. The next prime is 79687278703.

79687278697 is nontrivially palindromic in base 10.

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-79687278697 is a prime.

It is a super-2 number, since 2×79687278697² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (79687278607) 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, 547573 + ... + 677650.

It is an arithmetic number, because the mean of its divisors is an integer number (10729286568).

Almost surely, 2^79687278697 is an apocalyptic number.

It is an amenable number.

79687278697 is a deficient number, since it is larger than the sum of its proper divisors (6147013847).

79687278697 is a wasteful number, since it uses less digits than its factorization.

79687278697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1230239.

The product of its digits is 896168448, while the sum is 76.

The spelling of 79687278697 in words is "seventy-nine billion, six hundred eighty-seven million, two hundred seventy-eight thousand, six hundred ninety-seven".