64641322 has 8 divisors (see below), whose sum is σ = 96997572. Its totient is φ = 32308800.

The previous prime is 64641307. The next prime is 64641337. The reversal of 64641322 is 22314646.

It is an interprime number because it is at equal distance from previous prime (64641307) and next prime (64641337).

It can be written as a sum of positive squares in 2 ways, for example, as 46908801 + 17732521 = 6849^2 + 4211^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4672 + ... + 12292.

Almost surely, 2^64641322 is an apocalyptic number.

64641322 is a deficient number, since it is larger than the sum of its proper divisors (32356250).

64641322 is a wasteful number, since it uses less digits than its factorization.

64641322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11864.

The product of its digits is 6912, while the sum is 28.

The square root of 64641322 is about 8039.9827114242. The cubic root of 64641322 is about 401.3316493554.

Adding to 64641322 its reverse (22314646), we get a palindrome (86955968).

The spelling of 64641322 in words is "sixty-four million, six hundred forty-one thousand, three hundred twenty-two".