87748933 has 6 divisors (see below), whose sum is σ = 91730534. Its totient is φ = 83933256.

The previous prime is 87748919. The next prime is 87748937. The reversal of 87748933 is 33984778.

It can be written as a sum of positive squares in only one way, i.e., 80874049 + 6874884 = 8993^2 + 2622^2 .

It is a de Polignac number, because none of the positive numbers 2^k-87748933 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 (87748937) 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, 82410 + ... + 83467.

Almost surely, 2^87748933 is an apocalyptic number.

It is an amenable number.

87748933 is a deficient number, since it is larger than the sum of its proper divisors (3981601).

87748933 is a wasteful number, since it uses less digits than its factorization.

87748933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165923 (or 165900 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 49.

The square root of 87748933 is about 9367.4400451778. The cubic root of 87748933 is about 444.3726091237.

The spelling of 87748933 in words is "eighty-seven million, seven hundred forty-eight thousand, nine hundred thirty-three".