64927986 has 8 divisors (see below), whose sum is σ = 129855984. Its totient is φ = 21642660.

The previous prime is 64927963. The next prime is 64927987. The reversal of 64927986 is 68972946.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

64927986 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (64927987) 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 3 ways as a sum of consecutive naturals, for example, 5410660 + ... + 5410671.

It is an arithmetic number, because the mean of its divisors is an integer number (16231998).

Almost surely, 2^64927986 is an apocalyptic number.

64927986 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

64927986 is a wasteful number, since it uses less digits than its factorization.

64927986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10821336.

The product of its digits is 1306368, while the sum is 51.

The square root of 64927986 is about 8057.7903919127. The cubic root of 64927986 is about 401.9240345555.

The spelling of 64927986 in words is "sixty-four million, nine hundred twenty-seven thousand, nine hundred eighty-six".