87978227 has 6 divisors (see below), whose sum is σ = 92852748. Its totient is φ = 83347452.

The previous prime is 87978223. The next prime is 87978259. The reversal of 87978227 is 72287978.

It is not a de Polignac number, because 87978227 - 2² = 87978223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87978223) 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, 121493 + ... + 122214.

It is an arithmetic number, because the mean of its divisors is an integer number (15475458).

Almost surely, 2^87978227 is an apocalyptic number.

87978227 is a deficient number, since it is larger than the sum of its proper divisors (4874521).

87978227 is a wasteful number, since it uses less digits than its factorization.

87978227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243745 (or 243726 counting only the distinct ones).

The product of its digits is 790272, while the sum is 50.

The square root of 87978227 is about 9379.6709430555. The cubic root of 87978227 is about 444.7593312103.

The spelling of 87978227 in words is "eighty-seven million, nine hundred seventy-eight thousand, two hundred twenty-seven".