64042655 has 16 divisors (see below), whose sum is σ = 81907200. Its totient is φ = 47903232.

The previous prime is 64042651. The next prime is 64042703. The reversal of 64042655 is 55624046.

It is a cyclic number.

It is not a de Polignac number, because 64042655 - 2² = 64042651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64042651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10946 + ... + 15744.

It is an arithmetic number, because the mean of its divisors is an integer number (5119200).

Almost surely, 2^64042655 is an apocalyptic number.

64042655 is a deficient number, since it is larger than the sum of its proper divisors (17864545).

64042655 is a wasteful number, since it uses less digits than its factorization.

64042655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4978.

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 64042655 is about 8002.6654934465. The cubic root of 64042655 is about 400.0888448484.

The spelling of 64042655 in words is "sixty-four million, forty-two thousand, six hundred fifty-five".