65197287 has 6 divisors (see below), whose sum is σ = 94173872. Its totient is φ = 43464852.

The previous prime is 65197273. The next prime is 65197291. The reversal of 65197287 is 78279156.

It is not a de Polignac number, because 65197287 - 2¹¹ = 65195239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65197267) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3622063 + ... + 3622080.

Almost surely, 2^65197287 is an apocalyptic number.

65197287 is a deficient number, since it is larger than the sum of its proper divisors (28976585).

65197287 is a wasteful number, since it uses less digits than its factorization.

65197287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7244149 (or 7244146 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 65197287 is about 8074.4836986646. The cubic root of 65197287 is about 402.4789531579.

The spelling of 65197287 in words is "sixty-five million, one hundred ninety-seven thousand, two hundred eighty-seven".