65347985 has 4 divisors (see below), whose sum is σ = 78417588. Its totient is φ = 52278384.

The previous prime is 65347979. The next prime is 65347999. The reversal of 65347985 is 58974356.

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

It can be written as a sum of positive squares in 2 ways, for example, as 49674304 + 15673681 = 7048^2 + 3959^2 .

It is a cyclic number.

It is not a de Polignac number, because 65347985 - 2⁸ = 65347729 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6534794 + ... + 6534803.

It is an arithmetic number, because the mean of its divisors is an integer number (19604397).

Almost surely, 2^65347985 is an apocalyptic number.

It is an amenable number.

65347985 is a deficient number, since it is larger than the sum of its proper divisors (13069603).

65347985 is a wasteful number, since it uses less digits than its factorization.

65347985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13069602.

The product of its digits is 907200, while the sum is 47.

The square root of 65347985 is about 8083.8100546710. The cubic root of 65347985 is about 402.7888131983.

The spelling of 65347985 in words is "sixty-five million, three hundred forty-seven thousand, nine hundred eighty-five".