65397716 has 12 divisors (see below), whose sum is σ = 114547188. Its totient is φ = 32669952.

The previous prime is 65397713. The next prime is 65397721. The reversal of 65397716 is 61779356.

It can be written as a sum of positive squares in 2 ways, for example, as 38316100 + 27081616 = 6190^2 + 5204^2 .

It is a super-2 number, since 2×65397716² = 8553722516033312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65397713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1661 + ... + 11556.

It is an arithmetic number, because the mean of its divisors is an integer number (9545599).

Almost surely, 2^65397716 is an apocalyptic number.

It is an amenable number.

65397716 is a deficient number, since it is larger than the sum of its proper divisors (49149472).

65397716 is a wasteful number, since it uses less digits than its factorization.

65397716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14458 (or 14456 counting only the distinct ones).

The product of its digits is 238140, while the sum is 44.

The square root of 65397716 is about 8086.8854326001. The cubic root of 65397716 is about 402.8909638169.

The spelling of 65397716 in words is "sixty-five million, three hundred ninety-seven thousand, seven hundred sixteen".