65185013 has 4 divisors (see below), whose sum is σ = 68019168. Its totient is φ = 62350860.

The previous prime is 65184997. The next prime is 65185019. The reversal of 65185013 is 31058156.

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 65185013 - 2⁴ = 65184997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65185019) 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, 1417043 + ... + 1417088.

It is an arithmetic number, because the mean of its divisors is an integer number (17004792).

Almost surely, 2^65185013 is an apocalyptic number.

It is an amenable number.

65185013 is a deficient number, since it is larger than the sum of its proper divisors (2834155).

65185013 is a wasteful number, since it uses less digits than its factorization.

65185013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2834154.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 65185013 is about 8073.7236142935. The cubic root of 65185013 is about 402.4536947618.

The spelling of 65185013 in words is "sixty-five million, one hundred eighty-five thousand, thirteen".