87268291 has 4 divisors (see below), whose sum is σ = 95201784. Its totient is φ = 79334800.

The previous prime is 87268289. The next prime is 87268309. The reversal of 87268291 is 19286278.

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

It is a cyclic number.

It is not a de Polignac number, because 87268291 - 2¹ = 87268289 is a prime.

It is a super-3 number, since 3×87268291³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87268241) 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, 3966730 + ... + 3966751.

It is an arithmetic number, because the mean of its divisors is an integer number (23800446).

Almost surely, 2^87268291 is an apocalyptic number.

87268291 is a deficient number, since it is larger than the sum of its proper divisors (7933493).

87268291 is a wasteful number, since it uses less digits than its factorization.

87268291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7933492.

The product of its digits is 96768, while the sum is 43.

The square root of 87268291 is about 9341.7498896085. The cubic root of 87268291 is about 443.5597775975.

The spelling of 87268291 in words is "eighty-seven million, two hundred sixty-eight thousand, two hundred ninety-one".