87023633 has 6 divisors (see below), whose sum is σ = 87768966. Its totient is φ = 86280032.

The previous prime is 87023623. The next prime is 87023639. The reversal of 87023633 is 33632078.

It can be written as a sum of positive squares in 3 ways, for example, as 14569489 + 72454144 = 3817^2 + 8512^2 .

It is not a de Polignac number, because 87023633 - 2⁶ = 87023569 is a prime.

It is a super-2 number, since 2×87023633² = 15146225401037378, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87023633.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87023639) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 108791 + ... + 109587.

It is an arithmetic number, because the mean of its divisors is an integer number (14628161).

Almost surely, 2^87023633 is an apocalyptic number.

It is an amenable number.

87023633 is a deficient number, since it is larger than the sum of its proper divisors (745333).

87023633 is an frugal number, since it uses more digits than its factorization.

87023633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1731 (or 934 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 87023633 is about 9328.6458288435. The cubic root of 87023633 is about 443.1448807394.

The spelling of 87023633 in words is "eighty-seven million, twenty-three thousand, six hundred thirty-three".