1001722864 has 60 divisors (see below), whose sum is σ = 2136017800. Its totient is φ = 453796992.

The previous prime is 1001722861. The next prime is 1001722879. The reversal of 1001722864 is 4682271001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001722861) 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 11 ways as a sum of consecutive naturals, for example, 157702 + ... + 163930.

Almost surely, 2^1001722864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1001722864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1068008900).

1001722864 is an abundant number, since it is smaller than the sum of its proper divisors (1134294936).

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

1001722864 is a wasteful number, since it uses less digits than its factorization.

1001722864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6302 (or 6273 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 1001722864 is about 31650.0057503944. The cubic root of 1001722864 is about 1000.5739585086.

Adding to 1001722864 its reverse (4682271001), we get a palindrome (5683993865).

The spelling of 1001722864 in words is "one billion, one million, seven hundred twenty-two thousand, eight hundred sixty-four".