1322705664 has 108 divisors (see below), whose sum is σ = 4358552016. Its totient is φ = 377911296.

The previous prime is 1322705663. The next prime is 1322705687. The reversal of 1322705664 is 4665072231.

1322705664 is a `hidden beast` number, since 1 + 3 + 22 + 70 + 566 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1322705663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24879 + ... + 57134.

Almost surely, 2^1322705664 is an apocalyptic number.

1322705664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1322705664 is an abundant number, since it is smaller than the sum of its proper divisors (3035846352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1322705664 is an equidigital number, since it uses as much as digits as its factorization.

1322705664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82042 (or 82025 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 1322705664 is about 36369.0206631963. The cubic root of 1322705664 is about 1097.7102961294.

Adding to 1322705664 its reverse (4665072231), we get a palindrome (5987777895).

The spelling of 1322705664 in words is "one billion, three hundred twenty-two million, seven hundred five thousand, six hundred sixty-four".