64347956 has 12 divisors (see below), whose sum is σ = 112667268. Its totient is φ = 32157312.

The previous prime is 64347953. The next prime is 64347961. The reversal of 64347956 is 65974346.

It can be written as a sum of positive squares in 2 ways, for example, as 53523856 + 10824100 = 7316^2 + 3290^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64347953) 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, 9500 + ... + 14796.

It is an arithmetic number, because the mean of its divisors is an integer number (9388939).

Almost surely, 2^64347956 is an apocalyptic number.

It is an amenable number.

64347956 is a deficient number, since it is larger than the sum of its proper divisors (48319312).

64347956 is a wasteful number, since it uses less digits than its factorization.

64347956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8338 (or 8336 counting only the distinct ones).

The product of its digits is 544320, while the sum is 44.

The square root of 64347956 is about 8021.7177711510. The cubic root of 64347956 is about 400.7235985568.

The spelling of 64347956 in words is "sixty-four million, three hundred forty-seven thousand, nine hundred fifty-six".