65411491 has 4 divisors (see below), whose sum is σ = 65500272. Its totient is φ = 65322712.

The previous prime is 65411483. The next prime is 65411503. The reversal of 65411491 is 19411456.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 65411491 - 2³ = 65411483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65412491) 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, 43276 + ... + 44761.

It is an arithmetic number, because the mean of its divisors is an integer number (16375068).

Almost surely, 2^65411491 is an apocalyptic number.

65411491 is a deficient number, since it is larger than the sum of its proper divisors (88781).

65411491 is an equidigital number, since it uses as much as digits as its factorization.

65411491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88780.

The product of its digits is 4320, while the sum is 31.

The square root of 65411491 is about 8087.7370753506. The cubic root of 65411491 is about 402.9192493787.

The spelling of 65411491 in words is "sixty-five million, four hundred eleven thousand, four hundred ninety-one".