65719897 has 2 divisors, whose sum is σ = 65719898. Its totient is φ = 65719896.

The previous prime is 65719891. The next prime is 65719903. The reversal of 65719897 is 79891756.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (65719891) and next prime (65719903).

It can be written as a sum of positive squares in only one way, i.e., 50851161 + 14868736 = 7131^2 + 3856^2 .

It is a cyclic number.

It is not a de Polignac number, because 65719897 - 2³ = 65719889 is a prime.

It is not a weakly prime, because it can be changed into another prime (65719891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32859948 + 32859949.

It is an arithmetic number, because the mean of its divisors is an integer number (32859949).

Almost surely, 2^65719897 is an apocalyptic number.

It is an amenable number.

65719897 is a deficient number, since it is larger than the sum of its proper divisors (1).

65719897 is an equidigital number, since it uses as much as digits as its factorization.

65719897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 952560, while the sum is 52.

The square root of 65719897 is about 8106.7809271005. The cubic root of 65719897 is about 403.5514926758.

The spelling of 65719897 in words is "sixty-five million, seven hundred nineteen thousand, eight hundred ninety-seven".