88644065 has 4 divisors (see below), whose sum is σ = 106372884. Its totient is φ = 70915248.

The previous prime is 88644029. The next prime is 88644077. The reversal of 88644065 is 56044688.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36096064 + 52548001 = 6008^2 + 7249^2 .

It is a cyclic number.

It is not a de Polignac number, because 88644065 - 2⁸ = 88643809 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8864402 + ... + 8864411.

It is an arithmetic number, because the mean of its divisors is an integer number (26593221).

Almost surely, 2^88644065 is an apocalyptic number.

It is an amenable number.

88644065 is a deficient number, since it is larger than the sum of its proper divisors (17728819).

88644065 is a wasteful number, since it uses less digits than its factorization.

88644065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17728818.

The product of its (nonzero) digits is 184320, while the sum is 41.

The square root of 88644065 is about 9415.0977159029. The cubic root of 88644065 is about 445.8785236944.

The spelling of 88644065 in words is "eighty-eight million, six hundred forty-four thousand, sixty-five".