88440065 has 16 divisors (see below), whose sum is σ = 122221440. Its totient is φ = 60178560.

The previous prime is 88440061. The next prime is 88440071. The reversal of 88440065 is 56004488.

It is not a de Polignac number, because 88440065 - 2² = 88440061 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (88440061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5060 + ... + 14229.

It is an arithmetic number, because the mean of its divisors is an integer number (7638840).

Almost surely, 2^88440065 is an apocalyptic number.

It is an amenable number.

88440065 is a deficient number, since it is larger than the sum of its proper divisors (33781375).

88440065 is a wasteful number, since it uses less digits than its factorization.

88440065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19432.

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 88440065 is about 9404.2578122891. The cubic root of 88440065 is about 445.5362218375.

The spelling of 88440065 in words is "eighty-eight million, four hundred forty thousand, sixty-five".