65240445 has 16 divisors (see below), whose sum is σ = 105420672. Its totient is φ = 34449600.

The previous prime is 65240429. The next prime is 65240449. The reversal of 65240445 is 54404256.

It is not a de Polignac number, because 65240445 - 2⁴ = 65240429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65240449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20017 + ... + 23046.

It is an arithmetic number, because the mean of its divisors is an integer number (6588792).

Almost surely, 2^65240445 is an apocalyptic number.

It is an amenable number.

65240445 is a deficient number, since it is larger than the sum of its proper divisors (40180227).

65240445 is a wasteful number, since it uses less digits than its factorization.

65240445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43172.

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 65240445 is about 8077.1557493959. The cubic root of 65240445 is about 402.5677418999.

The spelling of 65240445 in words is "sixty-five million, two hundred forty thousand, four hundred forty-five".