87782263 has 4 divisors (see below), whose sum is σ = 88242048. Its totient is φ = 87322480.

The previous prime is 87782243. The next prime is 87782267. The reversal of 87782263 is 36228778.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87782263 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 (87782267) 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, 229606 + ... + 229987.

It is an arithmetic number, because the mean of its divisors is an integer number (22060512).

Almost surely, 2^87782263 is an apocalyptic number.

87782263 is a deficient number, since it is larger than the sum of its proper divisors (459785).

87782263 is a wasteful number, since it uses less digits than its factorization.

87782263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459784.

The product of its digits is 225792, while the sum is 43.

The square root of 87782263 is about 9369.2189108805. The cubic root of 87782263 is about 444.4288645627.

The spelling of 87782263 in words is "eighty-seven million, seven hundred eighty-two thousand, two hundred sixty-three".