65244745 has 4 divisors (see below), whose sum is σ = 78293700. Its totient is φ = 52195792.

The previous prime is 65244709. The next prime is 65244761. The reversal of 65244745 is 54744256.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43983424 + 21261321 = 6632^2 + 4611^2 .

It is a cyclic number.

It is not a de Polignac number, because 65244745 - 2⁷ = 65244617 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6524470 + ... + 6524479.

It is an arithmetic number, because the mean of its divisors is an integer number (19573425).

Almost surely, 2^65244745 is an apocalyptic number.

It is an amenable number.

65244745 is a deficient number, since it is larger than the sum of its proper divisors (13048955).

65244745 is a wasteful number, since it uses less digits than its factorization.

65244745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13048954.

The product of its digits is 134400, while the sum is 37.

The square root of 65244745 is about 8077.4219278183. The cubic root of 65244745 is about 402.5765861236.

The spelling of 65244745 in words is "sixty-five million, two hundred forty-four thousand, seven hundred forty-five".