64898895 has 16 divisors (see below), whose sum is σ = 105154560. Its totient is φ = 34173984.

The previous prime is 64898891. The next prime is 64898921. The reversal of 64898895 is 59889846.

It is not a de Polignac number, because 64898895 - 2² = 64898891 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64898891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26199 + ... + 28568.

It is an arithmetic number, because the mean of its divisors is an integer number (6572160).

Almost surely, 2^64898895 is an apocalyptic number.

64898895 is a deficient number, since it is larger than the sum of its proper divisors (40255665).

64898895 is a wasteful number, since it uses less digits than its factorization.

64898895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54854.

The product of its digits is 4976640, while the sum is 57.

The square root of 64898895 is about 8055.9850421907. The cubic root of 64898895 is about 401.8639982008.

The spelling of 64898895 in words is "sixty-four million, eight hundred ninety-eight thousand, eight hundred ninety-five".