65140493 has 8 divisors (see below), whose sum is σ = 74802720. Its totient is φ = 56101680.

The previous prime is 65140489. The next prime is 65140499. The reversal of 65140493 is 39404156.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65140493 - 2² = 65140489 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 (65140499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155630 + ... + 156047.

It is an arithmetic number, because the mean of its divisors is an integer number (9350340).

Almost surely, 2^65140493 is an apocalyptic number.

It is an amenable number.

65140493 is a deficient number, since it is larger than the sum of its proper divisors (9662227).

65140493 is a wasteful number, since it uses less digits than its factorization.

65140493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311707.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 65140493 is about 8070.9660512234. The cubic root of 65140493 is about 402.3620514108.

The spelling of 65140493 in words is "sixty-five million, one hundred forty thousand, four hundred ninety-three".