87072263 has 4 divisors (see below), whose sum is σ = 87842928. Its totient is φ = 86301600.

The previous prime is 87072217. The next prime is 87072277. The reversal of 87072263 is 36227078.

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 87072263 - 2²⁰ = 86023687 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 (87072203) 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, 385163 + ... + 385388.

It is an arithmetic number, because the mean of its divisors is an integer number (21960732).

Almost surely, 2^87072263 is an apocalyptic number.

87072263 is a deficient number, since it is larger than the sum of its proper divisors (770665).

87072263 is a wasteful number, since it uses less digits than its factorization.

87072263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770664.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 87072263 is about 9331.2519524445. The cubic root of 87072263 is about 443.2274105147.

The spelling of 87072263 in words is "eighty-seven million, seventy-two thousand, two hundred sixty-three".