65868737 has 4 divisors (see below), whose sum is σ = 71856816. Its totient is φ = 59880660.

The previous prime is 65868731. The next prime is 65868739. The reversal of 65868737 is 73786856.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65868737 - 2¹⁰ = 65867713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65868731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2994023 + ... + 2994044.

It is an arithmetic number, because the mean of its divisors is an integer number (17964204).

Almost surely, 2^65868737 is an apocalyptic number.

It is an amenable number.

65868737 is a deficient number, since it is larger than the sum of its proper divisors (5988079).

65868737 is a wasteful number, since it uses less digits than its factorization.

65868737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5988078.

The product of its digits is 1693440, while the sum is 50.

The square root of 65868737 is about 8115.9557046598. The cubic root of 65868737 is about 403.8559124931.

The spelling of 65868737 in words is "sixty-five million, eight hundred sixty-eight thousand, seven hundred thirty-seven".