87116390 has 16 divisors (see below), whose sum is σ = 160634880. Its totient is φ = 33996480.

The previous prime is 87116353. The next prime is 87116401. The reversal of 87116390 is 9361178.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 87116390.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105830 + ... + 106649.

It is an arithmetic number, because the mean of its divisors is an integer number (10039680).

Almost surely, 2^87116390 is an apocalyptic number.

87116390 is a deficient number, since it is larger than the sum of its proper divisors (73518490).

87116390 is a wasteful number, since it uses less digits than its factorization.

87116390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212527.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 87116390 is about 9333.6161266682. The cubic root of 87116390 is about 443.3022716788.

The spelling of 87116390 in words is "eighty-seven million, one hundred sixteen thousand, three hundred ninety".