65919673 has 2 divisors, whose sum is σ = 65919674. Its totient is φ = 65919672.

The previous prime is 65919649. The next prime is 65919701. The reversal of 65919673 is 37691956.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44129449 + 21790224 = 6643^2 + 4668^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65919673 is a prime.

It is not a weakly prime, because it can be changed into another prime (65916673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32959836 + 32959837.

It is an arithmetic number, because the mean of its divisors is an integer number (32959837).

Almost surely, 2^65919673 is an apocalyptic number.

It is an amenable number.

65919673 is a deficient number, since it is larger than the sum of its proper divisors (1).

65919673 is an equidigital number, since it uses as much as digits as its factorization.

65919673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 306180, while the sum is 46.

The square root of 65919673 is about 8119.0931143817. The cubic root of 65919673 is about 403.9599856621.

The spelling of 65919673 in words is "sixty-five million, nine hundred nineteen thousand, six hundred seventy-three".