64579946 has 4 divisors (see below), whose sum is σ = 96869922. Its totient is φ = 32289972.

The previous prime is 64579939. The next prime is 64579969. The reversal of 64579946 is 64997546.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 46389721 + 18190225 = 6811^2 + 4265^2 .

It is a junction number, because it is equal to n+sod(n) for n = 64579894 and 64579903.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16144985 + ... + 16144988.

Almost surely, 2^64579946 is an apocalyptic number.

64579946 is a deficient number, since it is larger than the sum of its proper divisors (32289976).

64579946 is a wasteful number, since it uses less digits than its factorization.

64579946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32289975.

The product of its digits is 1632960, while the sum is 50.

The square root of 64579946 is about 8036.1648813349. The cubic root of 64579946 is about 401.2045896016.

The spelling of 64579946 in words is "sixty-four million, five hundred seventy-nine thousand, nine hundred forty-six".