65601749 has 2 divisors, whose sum is σ = 65601750. Its totient is φ = 65601748.

The previous prime is 65601733. The next prime is 65601761. The reversal of 65601749 is 94710656.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62694724 + 2907025 = 7918^2 + 1705^2 .

It is a cyclic number.

It is not a de Polignac number, because 65601749 - 2⁴ = 65601733 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65601709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32800874 + 32800875.

It is an arithmetic number, because the mean of its divisors is an integer number (32800875).

Almost surely, 2^65601749 is an apocalyptic number.

It is an amenable number.

65601749 is a deficient number, since it is larger than the sum of its proper divisors (1).

65601749 is an equidigital number, since it uses as much as digits as its factorization.

65601749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 65601749 is about 8099.4906629985. The cubic root of 65601749 is about 403.3095192703.

The spelling of 65601749 in words is "sixty-five million, six hundred one thousand, seven hundred forty-nine".