65938231 has 8 divisors (see below), whose sum is σ = 67335840. Its totient is φ = 64555392.

The previous prime is 65938211. The next prime is 65938241. The reversal of 65938231 is 13283956.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65938231 is a prime.

It is a super-2 number, since 2×65938231² = 8695700614818722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65938211) 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, 5571 + ... + 12763.

It is an arithmetic number, because the mean of its divisors is an integer number (8416980).

Almost surely, 2^65938231 is an apocalyptic number.

65938231 is a deficient number, since it is larger than the sum of its proper divisors (1397609).

65938231 is a wasteful number, since it uses less digits than its factorization.

65938231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7385.

The product of its digits is 38880, while the sum is 37.

The square root of 65938231 is about 8120.2358955883. The cubic root of 65938231 is about 403.9978903102.

The spelling of 65938231 in words is "sixty-five million, nine hundred thirty-eight thousand, two hundred thirty-one".