87742277 has 8 divisors (see below), whose sum is σ = 101651136. Its totient is φ = 74176992.

The previous prime is 87742271. The next prime is 87742283. The reversal of 87742277 is 77224778.

It is an interprime number because it is at equal distance from previous prime (87742271) and next prime (87742283).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87742277 - 2⁴ = 87742261 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 (87742271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85343 + ... + 86364.

It is an arithmetic number, because the mean of its divisors is an integer number (12706392).

Almost surely, 2^87742277 is an apocalyptic number.

It is an amenable number.

87742277 is a deficient number, since it is larger than the sum of its proper divisors (13908859).

87742277 is a wasteful number, since it uses less digits than its factorization.

87742277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171787.

The product of its digits is 307328, while the sum is 44.

The square root of 87742277 is about 9367.0847652832. The cubic root of 87742277 is about 444.3613732079.

The spelling of 87742277 in words is "eighty-seven million, seven hundred forty-two thousand, two hundred seventy-seven".