64611678 has 16 divisors (see below), whose sum is σ = 129312000. Its totient is φ = 21522456.

The previous prime is 64611653. The next prime is 64611683. The reversal of 64611678 is 87611646.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9301 + ... + 14687.

It is an arithmetic number, because the mean of its divisors is an integer number (8082000).

Almost surely, 2^64611678 is an apocalyptic number.

64611678 is an abundant number, since it is smaller than the sum of its proper divisors (64700322).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64611678 is a wasteful number, since it uses less digits than its factorization.

64611678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7391.

The product of its digits is 48384, while the sum is 39.

The square root of 64611678 is about 8038.1389637154. The cubic root of 64611678 is about 401.2702907995.

The spelling of 64611678 in words is "sixty-four million, six hundred eleven thousand, six hundred seventy-eight".