64555070 has 16 divisors (see below), whose sum is σ = 116512560. Its totient is φ = 25752384.

The previous prime is 64555061. The next prime is 64555081. The reversal of 64555070 is 7055546.

It is a happy number.

64555070 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4727 + ... + 12306.

It is an arithmetic number, because the mean of its divisors is an integer number (7282035).

Almost surely, 2^64555070 is an apocalyptic number.

64555070 is a deficient number, since it is larger than the sum of its proper divisors (51957490).

64555070 is a wasteful number, since it uses less digits than its factorization.

64555070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17419.

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 64555070 is about 8034.6169790476. The cubic root of 64555070 is about 401.1530687207.

The spelling of 64555070 in words is "sixty-four million, five hundred fifty-five thousand, seventy".