87955977 has 8 divisors (see below), whose sum is σ = 124173216. Its totient is φ = 55188032.

The previous prime is 87955939. The next prime is 87955981. The reversal of 87955977 is 77955978.

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 87955977 - 2⁷ = 87955849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87956977) 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, 862263 + ... + 862364.

It is an arithmetic number, because the mean of its divisors is an integer number (15521652).

Almost surely, 2^87955977 is an apocalyptic number.

It is an amenable number.

87955977 is a deficient number, since it is larger than the sum of its proper divisors (36217239).

87955977 is a wasteful number, since it uses less digits than its factorization.

87955977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1724647.

The product of its digits is 5556600, while the sum is 57.

The square root of 87955977 is about 9378.4847923319. The cubic root of 87955977 is about 444.7218343212.

Subtracting from 87955977 its reverse (77955978), we obtain a palindrome (9999999).

The spelling of 87955977 in words is "eighty-seven million, nine hundred fifty-five thousand, nine hundred seventy-seven".