87664433 has 8 divisors (see below), whose sum is σ = 90911808. Its totient is φ = 84463344.

The previous prime is 87664399. The next prime is 87664439. The reversal of 87664433 is 33446678.

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 87664433 - 2¹⁴ = 87648049 is a prime.

It is a super-2 number, since 2×87664433² = 15370105626422978, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (87664439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7691 + ... + 15312.

It is an arithmetic number, because the mean of its divisors is an integer number (11363976).

Almost surely, 2^87664433 is an apocalyptic number.

It is an amenable number.

87664433 is a deficient number, since it is larger than the sum of its proper divisors (3247375).

87664433 is a wasteful number, since it uses less digits than its factorization.

87664433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23143.

The product of its digits is 290304, while the sum is 41.

The square root of 87664433 is about 9362.9286550737. The cubic root of 87664433 is about 444.2299234571.

The spelling of 87664433 in words is "eighty-seven million, six hundred sixty-four thousand, four hundred thirty-three".