65874861 has 24 divisors (see below), whose sum is σ = 103783680. Its totient is φ = 40019616.

The previous prime is 65874841. The next prime is 65874877. The reversal of 65874861 is 16847856.

It is a happy number.

65874861 is a `hidden beast` number, since 6 + 587 + 4 + 8 + 61 = 666.

It is not a de Polignac number, because 65874861 - 2⁷ = 65874733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65874811) 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, 5680 + ... + 12806.

It is an arithmetic number, because the mean of its divisors is an integer number (4324320).

Almost surely, 2^65874861 is an apocalyptic number.

It is an amenable number.

65874861 is a deficient number, since it is larger than the sum of its proper divisors (37908819).

65874861 is a wasteful number, since it uses less digits than its factorization.

65874861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7225 (or 7222 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 65874861 is about 8116.3329773981. The cubic root of 65874861 is about 403.8684279750.

The spelling of 65874861 in words is "sixty-five million, eight hundred seventy-four thousand, eight hundred sixty-one".