65402385 has 32 divisors (see below), whose sum is σ = 108103680. Its totient is φ = 33747648.

The previous prime is 65402369. The next prime is 65402387. The reversal of 65402385 is 58320456.

It is not a de Polignac number, because 65402385 - 2⁴ = 65402369 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65402387) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58744 + ... + 59846.

It is an arithmetic number, because the mean of its divisors is an integer number (3378240).

Almost surely, 2^65402385 is an apocalyptic number.

It is an amenable number.

65402385 is a deficient number, since it is larger than the sum of its proper divisors (42701295).

65402385 is a wasteful number, since it uses less digits than its factorization.

65402385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1237.

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 65402385 is about 8087.1741047167. The cubic root of 65402385 is about 402.9005515786.

The spelling of 65402385 in words is "sixty-five million, four hundred two thousand, three hundred eighty-five".