88168721 has 8 divisors (see below), whose sum is σ = 93712320. Its totient is φ = 82715472.

The previous prime is 88168711. The next prime is 88168727. The reversal of 88168721 is 12786188.

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

It is a cyclic number.

It is not a de Polignac number, because 88168721 - 2¹⁰ = 88167697 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (88168727) 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, 20570 + ... + 24483.

It is an arithmetic number, because the mean of its divisors is an integer number (11714040).

Almost surely, 2^88168721 is an apocalyptic number.

It is an amenable number.

88168721 is a deficient number, since it is larger than the sum of its proper divisors (5543599).

88168721 is a wasteful number, since it uses less digits than its factorization.

88168721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45175.

The product of its digits is 43008, while the sum is 41.

The square root of 88168721 is about 9389.8200728235. The cubic root of 88168721 is about 445.0801034101.

The spelling of 88168721 in words is "eighty-eight million, one hundred sixty-eight thousand, seven hundred twenty-one".