1172765648 has 10 divisors (see below), whose sum is σ = 2272233474. Its totient is φ = 586382816.

The previous prime is 1172765611. The next prime is 1172765663. The reversal of 1172765648 is 8465672711.

It can be written as a sum of positive squares in only one way, i.e., 1107025984 + 65739664 = 33272^2 + 8108^2 .

It is a super-3 number, since 3×1172765648³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36648911 + ... + 36648942.

Almost surely, 2^1172765648 is an apocalyptic number.

It is an amenable number.

1172765648 is a deficient number, since it is larger than the sum of its proper divisors (1099467826).

1172765648 is an equidigital number, since it uses as much as digits as its factorization.

1172765648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73297861 (or 73297855 counting only the distinct ones).

The product of its digits is 564480, while the sum is 47.

The square root of 1172765648 is about 34245.6661199633. Note that the first 3 decimals coincide. The cubic root of 1172765648 is about 1054.5578578983.

The spelling of 1172765648 in words is "one billion, one hundred seventy-two million, seven hundred sixty-five thousand, six hundred forty-eight".