64091606 has 4 divisors (see below), whose sum is σ = 96137412. Its totient is φ = 32045802.

The previous prime is 64091567. The next prime is 64091611. The reversal of 64091606 is 60619046.

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

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, 16022900 + ... + 16022903.

It is an arithmetic number, because the mean of its divisors is an integer number (24034353).

Almost surely, 2^64091606 is an apocalyptic number.

64091606 is a deficient number, since it is larger than the sum of its proper divisors (32045806).

64091606 is a wasteful number, since it uses less digits than its factorization.

64091606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32045805.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 64091606 is about 8005.7233277200. The cubic root of 64091606 is about 400.1907548503.

The spelling of 64091606 in words is "sixty-four million, ninety-one thousand, six hundred six".