65972451 has 8 divisors (see below), whose sum is σ = 88742160. Its totient is φ = 43592192.

The previous prime is 65972447. The next prime is 65972453. The reversal of 65972451 is 15427956.

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

It is a cyclic number.

It is not a de Polignac number, because 65972451 - 2² = 65972447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65972453) 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, 96966 + ... + 97643.

It is an arithmetic number, because the mean of its divisors is an integer number (11092770).

Almost surely, 2^65972451 is an apocalyptic number.

65972451 is a deficient number, since it is larger than the sum of its proper divisors (22769709).

65972451 is a wasteful number, since it uses less digits than its factorization.

65972451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194725.

The product of its digits is 75600, while the sum is 39.

The square root of 65972451 is about 8122.3427039248. The cubic root of 65972451 is about 404.0677658929.

The spelling of 65972451 in words is "sixty-five million, nine hundred seventy-two thousand, four hundred fifty-one".