65357491 has 2 divisors, whose sum is σ = 65357492. Its totient is φ = 65357490.

The previous prime is 65357449. The next prime is 65357507. The reversal of 65357491 is 19475356.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65357491 - 2⁷ = 65357363 is a prime.

It is not a weakly prime, because it can be changed into another prime (65357431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32678745 + 32678746.

It is an arithmetic number, because the mean of its divisors is an integer number (32678746).

Almost surely, 2^65357491 is an apocalyptic number.

65357491 is a deficient number, since it is larger than the sum of its proper divisors (1).

65357491 is an equidigital number, since it uses as much as digits as its factorization.

65357491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 113400, while the sum is 40.

The square root of 65357491 is about 8084.3979986144. The cubic root of 65357491 is about 402.8083431288.

The spelling of 65357491 in words is "sixty-five million, three hundred fifty-seven thousand, four hundred ninety-one".