87874533 has 6 divisors (see below), whose sum is σ = 126929894. Its totient is φ = 58583016.

The previous prime is 87874517. The next prime is 87874543. The reversal of 87874533 is 33547878.

It can be written as a sum of positive squares in only one way, i.e., 83942244 + 3932289 = 9162^2 + 1983^2 .

It is not a de Polignac number, because 87874533 - 2⁴ = 87874517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87874543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4881910 + ... + 4881927.

Almost surely, 2^87874533 is an apocalyptic number.

It is an amenable number.

87874533 is a deficient number, since it is larger than the sum of its proper divisors (39055361).

87874533 is a wasteful number, since it uses less digits than its factorization.

87874533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9763843 (or 9763840 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The square root of 87874533 is about 9374.1417207124. The cubic root of 87874533 is about 444.5845265774.

The spelling of 87874533 in words is "eighty-seven million, eight hundred seventy-four thousand, five hundred thirty-three".