65140093 has 4 divisors (see below), whose sum is σ = 65716668. Its totient is φ = 64563520.

The previous prime is 65140081. The next prime is 65140099. The reversal of 65140093 is 39004156.

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 14417209 + 50722884 = 3797^2 + 7122^2 .

It is a cyclic number.

It is not a de Polignac number, because 65140093 - 2¹³ = 65131901 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 (65140099) 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, 288118 + ... + 288343.

It is an arithmetic number, because the mean of its divisors is an integer number (16429167).

Almost surely, 2^65140093 is an apocalyptic number.

It is an amenable number.

65140093 is a deficient number, since it is larger than the sum of its proper divisors (576575).

65140093 is a wasteful number, since it uses less digits than its factorization.

65140093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576574.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 65140093 is about 8070.9412710043. The cubic root of 65140093 is about 402.3612278312.

The spelling of 65140093 in words is "sixty-five million, one hundred forty thousand, ninety-three".