65940393 has 8 divisors (see below), whose sum is σ = 92548000. Its totient is φ = 41646528.

The previous prime is 65940383. The next prime is 65940419. The reversal of 65940393 is 39304956.

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

It is not a de Polignac number, because 65940393 - 2⁵ = 65940361 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65940323) 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, 578368 + ... + 578481.

It is an arithmetic number, because the mean of its divisors is an integer number (11568500).

Almost surely, 2^65940393 is an apocalyptic number.

It is an amenable number.

65940393 is a deficient number, since it is larger than the sum of its proper divisors (26607607).

65940393 is a wasteful number, since it uses less digits than its factorization.

65940393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156871.

The product of its (nonzero) digits is 87480, while the sum is 39.

The square root of 65940393 is about 8120.3690187084. The cubic root of 65940393 is about 404.0023057248.

The spelling of 65940393 in words is "sixty-five million, nine hundred forty thousand, three hundred ninety-three".