88721816 has 32 divisors (see below), whose sum is σ = 169944480. Its totient is φ = 43411200.

The previous prime is 88721807. The next prime is 88721821. The reversal of 88721816 is 61812788.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136805 + ... + 137451.

It is an arithmetic number, because the mean of its divisors is an integer number (5310765).

Almost surely, 2^88721816 is an apocalyptic number.

It is an amenable number.

88721816 is a deficient number, since it is larger than the sum of its proper divisors (81222664).

88721816 is a wasteful number, since it uses less digits than its factorization.

88721816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995 (or 991 counting only the distinct ones).

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

The square root of 88721816 is about 9419.2258705267. The cubic root of 88721816 is about 446.0088477804.

The spelling of 88721816 in words is "eighty-eight million, seven hundred twenty-one thousand, eight hundred sixteen".