64681346 has 16 divisors (see below), whose sum is σ = 99701280. Its totient is φ = 31459200.

The previous prime is 64681343. The next prime is 64681349. The reversal of 64681346 is 64318646.

It is an interprime number because it is at equal distance from previous prime (64681343) and next prime (64681349).

It is not an unprimeable number, because it can be changed into a prime (64681343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8621 + ... + 14271.

It is an arithmetic number, because the mean of its divisors is an integer number (6231330).

Almost surely, 2^64681346 is an apocalyptic number.

64681346 is a deficient number, since it is larger than the sum of its proper divisors (35019934).

64681346 is a wasteful number, since it uses less digits than its factorization.

64681346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5809.

The product of its digits is 82944, while the sum is 38.

The square root of 64681346 is about 8042.4713863339. The cubic root of 64681346 is about 401.4144631725.

The spelling of 64681346 in words is "sixty-four million, six hundred eighty-one thousand, three hundred forty-six".