65687995 has 8 divisors (see below), whose sum is σ = 79180416. Its totient is φ = 52313856.

The previous prime is 65687989. The next prime is 65688013. The reversal of 65687995 is 59978656.

It is a happy number.

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 65687995 - 2²¹ = 63590843 is a prime.

It is a Duffinian 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, 28342 + ... + 30571.

It is an arithmetic number, because the mean of its divisors is an integer number (9897552).

Almost surely, 2^65687995 is an apocalyptic number.

65687995 is a deficient number, since it is larger than the sum of its proper divisors (13492421).

65687995 is a wasteful number, since it uses less digits than its factorization.

65687995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59141.

The product of its digits is 4082400, while the sum is 55.

The square root of 65687995 is about 8104.8130761912. The cubic root of 65687995 is about 403.4861842786.

The spelling of 65687995 in words is "sixty-five million, six hundred eighty-seven thousand, nine hundred ninety-five".