65973997 has 8 divisors (see below), whose sum is σ = 69334496. Its totient is φ = 62696592.

The previous prime is 65973989. The next prime is 65974037. The reversal of 65973997 is 79937956.

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 65973997 - 2³ = 65973989 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 (65973917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19143 + ... + 22324.

It is an arithmetic number, because the mean of its divisors is an integer number (8666812).

Almost surely, 2^65973997 is an apocalyptic number.

It is an amenable number.

65973997 is a deficient number, since it is larger than the sum of its proper divisors (3360499).

65973997 is a wasteful number, since it uses less digits than its factorization.

65973997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41547.

The product of its digits is 3214890, while the sum is 55.

The square root of 65973997 is about 8122.4378729542. The cubic root of 65973997 is about 404.0709221795.

The spelling of 65973997 in words is "sixty-five million, nine hundred seventy-three thousand, nine hundred ninety-seven".