65240197 has 4 divisors (see below), whose sum is σ = 71171136. Its totient is φ = 59309260.

The previous prime is 65240177. The next prime is 65240207. The reversal of 65240197 is 79104256.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65240197 - 2¹⁹ = 64715909 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 (65240107) 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, 2965453 + ... + 2965474.

It is an arithmetic number, because the mean of its divisors is an integer number (17792784).

Almost surely, 2^65240197 is an apocalyptic number.

It is an amenable number.

65240197 is a deficient number, since it is larger than the sum of its proper divisors (5930939).

65240197 is a wasteful number, since it uses less digits than its factorization.

65240197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5930938.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 65240197 is about 8077.1403974426. The cubic root of 65240197 is about 402.5672318026.

The spelling of 65240197 in words is "sixty-five million, two hundred forty thousand, one hundred ninety-seven".