64240245 has 12 divisors (see below), whose sum is σ = 111349836. Its totient is φ = 34261440.

The previous prime is 64240223. The next prime is 64240247. The reversal of 64240245 is 54204246.

It can be written as a sum of positive squares in 2 ways, for example, as 7584516 + 56655729 = 2754^2 + 7527^2 .

It is not a de Polignac number, because 64240245 - 2⁵ = 64240213 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64240247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 713736 + ... + 713825.

It is an arithmetic number, because the mean of its divisors is an integer number (9279153).

Almost surely, 2^64240245 is an apocalyptic number.

It is an amenable number.

64240245 is a deficient number, since it is larger than the sum of its proper divisors (47109591).

64240245 is a wasteful number, since it uses less digits than its factorization.

64240245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427572 (or 1427569 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 64240245 is about 8015.0012476605. The cubic root of 64240245 is about 400.4998854428.

The spelling of 64240245 in words is "sixty-four million, two hundred forty thousand, two hundred forty-five".