65972943 has 12 divisors (see below), whose sum is σ = 95453488. Its totient is φ = 43908480.

The previous prime is 65972911. The next prime is 65972981. The reversal of 65972943 is 34927956.

It is a happy number.

It is not a de Polignac number, because 65972943 - 2⁵ = 65972911 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 (65972143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 130 + ... + 11487.

Almost surely, 2^65972943 is an apocalyptic number.

65972943 is a deficient number, since it is larger than the sum of its proper divisors (29480545).

65972943 is a wasteful number, since it uses less digits than its factorization.

65972943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12254 (or 12251 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The square root of 65972943 is about 8122.3729906967. The cubic root of 65972943 is about 404.0687703568.

The spelling of 65972943 in words is "sixty-five million, nine hundred seventy-two thousand, nine hundred forty-three".