65997495 has 24 divisors (see below), whose sum is σ = 117189072. Its totient is φ = 34339200.

The previous prime is 65997457. The next prime is 65997497. The reversal of 65997495 is 59479956.

65997495 is a `hidden beast` number, since 6 + 599 + 7 + 49 + 5 = 666.

It is not a de Polignac number, because 65997495 - 2¹³ = 65989303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65997497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16041 + ... + 19730.

It is an arithmetic number, because the mean of its divisors is an integer number (4882878).

Almost surely, 2^65997495 is an apocalyptic number.

65997495 is a deficient number, since it is larger than the sum of its proper divisors (51191577).

65997495 is a wasteful number, since it uses less digits than its factorization.

65997495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35823 (or 35820 counting only the distinct ones).

The product of its digits is 3061800, while the sum is 54.

The square root of 65997495 is about 8123.8842310806. The cubic root of 65997495 is about 404.1188892166.

The spelling of 65997495 in words is "sixty-five million, nine hundred ninety-seven thousand, four hundred ninety-five".