87945965 has 16 divisors (see below), whose sum is σ = 113678400. Its totient is φ = 65100672.

The previous prime is 87945959. The next prime is 87945967. The reversal of 87945965 is 56954978.

It is a cyclic number.

It is not a de Polignac number, because 87945965 - 2⁶ = 87945901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87945967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6680 + ... + 14849.

It is an arithmetic number, because the mean of its divisors is an integer number (7104900).

Almost surely, 2^87945965 is an apocalyptic number.

It is an amenable number.

87945965 is a deficient number, since it is larger than the sum of its proper divisors (25732435).

87945965 is a wasteful number, since it uses less digits than its factorization.

87945965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21596.

The product of its digits is 2721600, while the sum is 53.

The square root of 87945965 is about 9377.9510022179. The cubic root of 87945965 is about 444.7049595007.

The spelling of 87945965 in words is "eighty-seven million, nine hundred forty-five thousand, nine hundred sixty-five".