65023491 has 16 divisors (see below), whose sum is σ = 98282240. Its totient is φ = 37908000.

The previous prime is 65023463. The next prime is 65023501. The reversal of 65023491 is 19432056.

It is not a de Polignac number, because 65023491 - 2⁵ = 65023459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65021491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43135 + ... + 44616.

It is an arithmetic number, because the mean of its divisors is an integer number (6142640).

Almost surely, 2^65023491 is an apocalyptic number.

65023491 is a deficient number, since it is larger than the sum of its proper divisors (33258749).

65023491 is a wasteful number, since it uses less digits than its factorization.

65023491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87786.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 65023491 is about 8063.7144666711. The cubic root of 65023491 is about 402.1210063681.

The spelling of 65023491 in words is "sixty-five million, twenty-three thousand, four hundred ninety-one".