65997160 has 32 divisors (see below), whose sum is σ = 148725000. Its totient is φ = 26357760.

The previous prime is 65997157. The next prime is 65997227. The reversal of 65997160 is 6179956.

It can be written as a sum of positive squares in 4 ways, for example, as 61811044 + 4186116 = 7862^2 + 2046^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49300 + ... + 50620.

Almost surely, 2^65997160 is an apocalyptic number.

It is an amenable number.

65997160 is an abundant number, since it is smaller than the sum of its proper divisors (82727840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65997160 is a wasteful number, since it uses less digits than its factorization.

65997160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2581 (or 2577 counting only the distinct ones).

The product of its (nonzero) digits is 102060, while the sum is 43.

The square root of 65997160 is about 8123.8636128384. The cubic root of 65997160 is about 404.1182054530.

The spelling of 65997160 in words is "sixty-five million, nine hundred ninety-seven thousand, one hundred sixty".