65874491 has 2 divisors, whose sum is σ = 65874492. Its totient is φ = 65874490.

The previous prime is 65874481. The next prime is 65874499. The reversal of 65874491 is 19447856.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65874491 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65874499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32937245 + 32937246.

It is an arithmetic number, because the mean of its divisors is an integer number (32937246).

Almost surely, 2^65874491 is an apocalyptic number.

65874491 is a deficient number, since it is larger than the sum of its proper divisors (1).

65874491 is an equidigital number, since it uses as much as digits as its factorization.

65874491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 44.

The square root of 65874491 is about 8116.3101838212. The cubic root of 65874491 is about 403.8676718363.

The spelling of 65874491 in words is "sixty-five million, eight hundred seventy-four thousand, four hundred ninety-one".