65298985 has 4 divisors (see below), whose sum is σ = 78358788. Its totient is φ = 52239184.

The previous prime is 65298979. The next prime is 65299037. The reversal of 65298985 is 58989256.

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 14561856 + 50737129 = 3816^2 + 7123^2 .

It is a cyclic number.

It is not a de Polignac number, because 65298985 - 2³ = 65298977 is a prime.

It is an alternating number because its digits alternate between even and odd.

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, 6529894 + ... + 6529903.

It is an arithmetic number, because the mean of its divisors is an integer number (19589697).

Almost surely, 2^65298985 is an apocalyptic number.

It is an amenable number.

65298985 is a deficient number, since it is larger than the sum of its proper divisors (13059803).

65298985 is a wasteful number, since it uses less digits than its factorization.

65298985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13059802.

The product of its digits is 1555200, while the sum is 52.

The square root of 65298985 is about 8080.7787372258. The cubic root of 65298985 is about 402.6881133988.

The spelling of 65298985 in words is "sixty-five million, two hundred ninety-eight thousand, nine hundred eighty-five".