87997795 has 4 divisors (see below), whose sum is σ = 105597360. Its totient is φ = 70398232.

The previous prime is 87997769. The next prime is 87997801. The reversal of 87997795 is 59779978.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87997795 is a prime.

It is a super-2 number, since 2×87997795² = 15487223849724050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8799775 + ... + 8799784.

It is an arithmetic number, because the mean of its divisors is an integer number (26399340).

Almost surely, 2^87997795 is an apocalyptic number.

87997795 is a deficient number, since it is larger than the sum of its proper divisors (17599565).

87997795 is a wasteful number, since it uses less digits than its factorization.

87997795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17599564.

The product of its digits is 10001880, while the sum is 61.

The square root of 87997795 is about 9380.7139920157. The cubic root of 87997795 is about 444.7923030252.

The spelling of 87997795 in words is "eighty-seven million, nine hundred ninety-seven thousand, seven hundred ninety-five".