87723665 has 8 divisors (see below), whose sum is σ = 110808960. Its totient is φ = 66485232.

The previous prime is 87723659. The next prime is 87723683. The reversal of 87723665 is 56632778.

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

It is a cyclic number.

It is not a de Polignac number, because 87723665 - 2⁸ = 87723409 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 461609 + ... + 461798.

It is an arithmetic number, because the mean of its divisors is an integer number (13851120).

Almost surely, 2^87723665 is an apocalyptic number.

It is an amenable number.

87723665 is a deficient number, since it is larger than the sum of its proper divisors (23085295).

87723665 is a wasteful number, since it uses less digits than its factorization.

87723665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 923431.

The product of its digits is 423360, while the sum is 44.

The square root of 87723665 is about 9366.0912338072. The cubic root of 87723665 is about 444.3299514919.

It can be divided in two parts, 87723 and 665, that added together give a palindrome (88388).

The spelling of 87723665 in words is "eighty-seven million, seven hundred twenty-three thousand, six hundred sixty-five".