64842255 has 32 divisors (see below), whose sum is σ = 115811520. Its totient is φ = 34421760.

The previous prime is 64842227. The next prime is 64842257. The reversal of 64842255 is 55224846.

It is a happy number.

64842255 is a `hidden beast` number, since 648 + 4 + 2 + 2 + 5 + 5 = 666.

It is not a de Polignac number, because 64842255 - 2⁵ = 64842223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64842257) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31539 + ... + 33531.

It is an arithmetic number, because the mean of its divisors is an integer number (3619110).

Almost surely, 2^64842255 is an apocalyptic number.

64842255 is a deficient number, since it is larger than the sum of its proper divisors (50969265).

64842255 is a wasteful number, since it uses less digits than its factorization.

64842255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2248 (or 2242 counting only the distinct ones).

The product of its digits is 76800, while the sum is 36.

The square root of 64842255 is about 8052.4688760653. The cubic root of 64842255 is about 401.7470562933.

The spelling of 64842255 in words is "sixty-four million, eight hundred forty-two thousand, two hundred fifty-five".