87872277 has 4 divisors (see below), whose sum is σ = 117163040. Its totient is φ = 58581516.

The previous prime is 87872249. The next prime is 87872293. The reversal of 87872277 is 77227878.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 87872277 - 2⁷ = 87872149 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 (87872237) 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, 14645377 + ... + 14645382.

It is an arithmetic number, because the mean of its divisors is an integer number (29290760).

Almost surely, 2^87872277 is an apocalyptic number.

It is an amenable number.

87872277 is a deficient number, since it is larger than the sum of its proper divisors (29290763).

87872277 is a wasteful number, since it uses less digits than its factorization.

87872277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29290762.

The product of its digits is 614656, while the sum is 48.

The square root of 87872277 is about 9374.0213889238. The cubic root of 87872277 is about 444.5807219435.

The spelling of 87872277 in words is "eighty-seven million, eight hundred seventy-two thousand, two hundred seventy-seven".