65233985 has 4 divisors (see below), whose sum is σ = 78280788. Its totient is φ = 52187184.

The previous prime is 65233969. The next prime is 65234009. The reversal of 65233985 is 58933256.

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 35509681 + 29724304 = 5959^2 + 5452^2 .

It is a cyclic number.

It is not a de Polignac number, because 65233985 - 2⁴ = 65233969 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, 6523394 + ... + 6523403.

It is an arithmetic number, because the mean of its divisors is an integer number (19570197).

Almost surely, 2^65233985 is an apocalyptic number.

It is an amenable number.

65233985 is a deficient number, since it is larger than the sum of its proper divisors (13046803).

65233985 is a wasteful number, since it uses less digits than its factorization.

65233985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13046802.

The product of its digits is 194400, while the sum is 41.

The square root of 65233985 is about 8076.7558462541. The cubic root of 65233985 is about 402.5544542660.

The spelling of 65233985 in words is "sixty-five million, two hundred thirty-three thousand, nine hundred eighty-five".