87140977 has 8 divisors (see below), whose sum is σ = 108643392. Its totient is φ = 67902000.

The previous prime is 87140971. The next prime is 87140983. The reversal of 87140977 is 77904178.

It is an interprime number because it is at equal distance from previous prime (87140971) and next prime (87140983).

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 87140977 - 2⁷ = 87140849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87140971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 565774 + ... + 565927.

It is an arithmetic number, because the mean of its divisors is an integer number (13580424).

Almost surely, 2^87140977 is an apocalyptic number.

It is an amenable number.

87140977 is a deficient number, since it is larger than the sum of its proper divisors (21502415).

87140977 is a wasteful number, since it uses less digits than its factorization.

87140977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1131719.

The product of its (nonzero) digits is 98784, while the sum is 43.

The square root of 87140977 is about 9334.9331545545. The cubic root of 87140977 is about 443.3439723956.

The spelling of 87140977 in words is "eighty-seven million, one hundred forty thousand, nine hundred seventy-seven".