65972873 has 4 divisors (see below), whose sum is σ = 66014208. Its totient is φ = 65931540.

The previous prime is 65972861. The next prime is 65972891. The reversal of 65972873 is 37827956.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65972873 - 2⁴ = 65972857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65972833) 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, 18173 + ... + 21498.

It is an arithmetic number, because the mean of its divisors is an integer number (16503552).

Almost surely, 2^65972873 is an apocalyptic number.

It is an amenable number.

65972873 is a deficient number, since it is larger than the sum of its proper divisors (41335).

65972873 is a wasteful number, since it uses less digits than its factorization.

65972873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41334.

The product of its digits is 635040, while the sum is 47.

The square root of 65972873 is about 8122.3686816101. The cubic root of 65972873 is about 404.0686274456.

The spelling of 65972873 in words is "sixty-five million, nine hundred seventy-two thousand, eight hundred seventy-three".