88607721 has 8 divisors (see below), whose sum is σ = 118200064. Its totient is φ = 59043600.

The previous prime is 88607719. The next prime is 88607809. The reversal of 88607721 is 12770688.

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

It is not a de Polignac number, because 88607721 - 2¹ = 88607719 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 88607721.

It is not an unprimeable number, because it can be changed into a prime (88607521) 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, 1896 + ... + 13446.

It is an arithmetic number, because the mean of its divisors is an integer number (14775008).

Almost surely, 2^88607721 is an apocalyptic number.

It is an amenable number.

88607721 is a deficient number, since it is larger than the sum of its proper divisors (29592343).

88607721 is a wasteful number, since it uses less digits than its factorization.

88607721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14111.

The product of its (nonzero) digits is 37632, while the sum is 39.

The square root of 88607721 is about 9413.1674265361. The cubic root of 88607721 is about 445.8175787447.

The spelling of 88607721 in words is "eighty-eight million, six hundred seven thousand, seven hundred twenty-one".