88633721 has 4 divisors (see below), whose sum is σ = 96691344. Its totient is φ = 80576100.

The previous prime is 88633717. The next prime is 88633723. The reversal of 88633721 is 12733688.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 88633721 - 2² = 88633717 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 (88633723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4028795 + ... + 4028816.

It is an arithmetic number, because the mean of its divisors is an integer number (24172836).

Almost surely, 2^88633721 is an apocalyptic number.

It is an amenable number.

88633721 is a deficient number, since it is larger than the sum of its proper divisors (8057623).

88633721 is a wasteful number, since it uses less digits than its factorization.

88633721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8057622.

The product of its digits is 48384, while the sum is 38.

The square root of 88633721 is about 9414.5483694121. The cubic root of 88633721 is about 445.8611796235.

The spelling of 88633721 in words is "eighty-eight million, six hundred thirty-three thousand, seven hundred twenty-one".