64645322 has 16 divisors (see below), whose sum is σ = 117339840. Its totient is φ = 26075328.

The previous prime is 64645307. The next prime is 64645457. The reversal of 64645322 is 22354646.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135572 + ... + 136047.

It is an arithmetic number, because the mean of its divisors is an integer number (7333740).

Almost surely, 2^64645322 is an apocalyptic number.

64645322 is a deficient number, since it is larger than the sum of its proper divisors (52694518).

64645322 is a wasteful number, since it uses less digits than its factorization.

64645322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271645.

The product of its digits is 34560, while the sum is 32.

The square root of 64645322 is about 8040.2314643299. The cubic root of 64645322 is about 401.3399273085.

Adding to 64645322 its reverse (22354646), we get a palindrome (86999968).

The spelling of 64645322 in words is "sixty-four million, six hundred forty-five thousand, three hundred twenty-two".