64939676 has 6 divisors (see below), whose sum is σ = 113644440. Its totient is φ = 32469836.

The previous prime is 64939661. The next prime is 64939717. The reversal of 64939676 is 67693946.

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 as a sum of consecutive naturals, namely, 8117456 + ... + 8117463.

It is an arithmetic number, because the mean of its divisors is an integer number (18940740).

Almost surely, 2^64939676 is an apocalyptic number.

It is an amenable number.

64939676 is a deficient number, since it is larger than the sum of its proper divisors (48704764).

64939676 is a wasteful number, since it uses less digits than its factorization.

64939676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16234923 (or 16234921 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 50.

The square root of 64939676 is about 8058.5157442298. The cubic root of 64939676 is about 401.9481546630.

The spelling of 64939676 in words is "sixty-four million, nine hundred thirty-nine thousand, six hundred seventy-six".