65746491 has 4 divisors (see below), whose sum is σ = 87661992. Its totient is φ = 43830992.

The previous prime is 65746481. The next prime is 65746507. The reversal of 65746491 is 19464756.

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 65746491 - 2⁵ = 65746459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65746481) 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 3 ways as a sum of consecutive naturals, for example, 10957746 + ... + 10957751.

It is an arithmetic number, because the mean of its divisors is an integer number (21915498).

Almost surely, 2^65746491 is an apocalyptic number.

65746491 is a deficient number, since it is larger than the sum of its proper divisors (21915501).

65746491 is a wasteful number, since it uses less digits than its factorization.

65746491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21915500.

The product of its digits is 181440, while the sum is 42.

The square root of 65746491 is about 8108.4209930171. The cubic root of 65746491 is about 403.6059186138.

The spelling of 65746491 in words is "sixty-five million, seven hundred forty-six thousand, four hundred ninety-one".