65319851 has 2 divisors, whose sum is σ = 65319852. Its totient is φ = 65319850.

The previous prime is 65319817. The next prime is 65319857. The reversal of 65319851 is 15891356.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65319851 - 2¹⁴ = 65303467 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (65319857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32659925 + 32659926.

It is an arithmetic number, because the mean of its divisors is an integer number (32659926).

Almost surely, 2^65319851 is an apocalyptic number.

65319851 is a deficient number, since it is larger than the sum of its proper divisors (1).

65319851 is an equidigital number, since it uses as much as digits as its factorization.

65319851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 38.

The square root of 65319851 is about 8082.0697225401. The cubic root of 65319851 is about 402.7310012290.

The spelling of 65319851 in words is "sixty-five million, three hundred nineteen thousand, eight hundred fifty-one".