88664332691 has 8 divisors (see below), whose sum is σ = 96998738544. Its totient is φ = 80375595520.

The previous prime is 88664332667. The next prime is 88664332693. The reversal of 88664332691 is 19623346688.

It is a happy number.

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

It is not a de Polignac number, because 88664332691 - 2¹⁰ = 88664331667 is a prime.

It is a super-2 number, since 2×88664332691² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88664332693) 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, 11413106 + ... + 11420871.

It is an arithmetic number, because the mean of its divisors is an integer number (12124842318).

Almost surely, 2^88664332691 is an apocalyptic number.

88664332691 is a deficient number, since it is larger than the sum of its proper divisors (8334405853).

88664332691 is a wasteful number, since it uses less digits than its factorization.

88664332691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22834341.

The product of its digits is 8957952, while the sum is 56.

The spelling of 88664332691 in words is "eighty-eight billion, six hundred sixty-four million, three hundred thirty-two thousand, six hundred ninety-one".