1172099664 has 240 divisors, whose sum is σ = 3603787200. Its totient is φ = 354392064.

The previous prime is 1172099587. The next prime is 1172099707. The reversal of 1172099664 is 4669902711.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8555404 + ... + 8555540.

It is an arithmetic number, because the mean of its divisors is an integer number (15015780).

Almost surely, 2^1172099664 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 1172099664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1801893600).

1172099664 is an abundant number, since it is smaller than the sum of its proper divisors (2431687536).

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

1172099664 is a wasteful number, since it uses less digits than its factorization.

1172099664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282 (or 273 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 1172099664 is about 34235.9411145656. The cubic root of 1172099664 is about 1054.3582011733.

The spelling of 1172099664 in words is "one billion, one hundred seventy-two million, ninety-nine thousand, six hundred sixty-four".