87633733 has 4 divisors (see below), whose sum is σ = 95600448. Its totient is φ = 79667020.

The previous prime is 87633731. The next prime is 87633781. The reversal of 87633733 is 33733678.

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 a cyclic number.

It is not a de Polignac number, because 87633733 - 2¹ = 87633731 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87633731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3983341 + ... + 3983362.

It is an arithmetic number, because the mean of its divisors is an integer number (23900112).

Almost surely, 2^87633733 is an apocalyptic number.

It is an amenable number.

87633733 is a deficient number, since it is larger than the sum of its proper divisors (7966715).

87633733 is a wasteful number, since it uses less digits than its factorization.

87633733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7966714.

The product of its digits is 190512, while the sum is 40.

The square root of 87633733 is about 9361.2890672172. The cubic root of 87633733 is about 444.1780611055.

The spelling of 87633733 in words is "eighty-seven million, six hundred thirty-three thousand, seven hundred thirty-three".