87974233 has 4 divisors (see below), whose sum is σ = 90119988. Its totient is φ = 85828480.

The previous prime is 87974231. The next prime is 87974279. The reversal of 87974233 is 33247978.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5745609 + 82228624 = 2397^2 + 9068^2 .

It is a cyclic number.

It is not a de Polignac number, because 87974233 - 2¹ = 87974231 is a prime.

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 87974233.

It is not an unprimeable number, because it can be changed into a prime (87974231) 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, 1072816 + ... + 1072897.

It is an arithmetic number, because the mean of its divisors is an integer number (22529997).

Almost surely, 2^87974233 is an apocalyptic number.

It is an amenable number.

87974233 is a deficient number, since it is larger than the sum of its proper divisors (2145755).

87974233 is a wasteful number, since it uses less digits than its factorization.

87974233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2145754.

The product of its digits is 254016, while the sum is 43.

The square root of 87974233 is about 9379.4580333834. The cubic root of 87974233 is about 444.7526007737.

The spelling of 87974233 in words is "eighty-seven million, nine hundred seventy-four thousand, two hundred thirty-three".