117570649 has 9 divisors (see below), whose sum is σ = 136854207. Its totient is φ = 100709784.

The previous prime is 117570647. The next prime is 117570653. The reversal of 117570649 is 946075711.

The square root of 117570649 is 10843.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 39778249 + 77792400 = 6307^2 + 8820^2 .

It is not a de Polignac number, because 117570649 - 2¹ = 117570647 is a prime.

It is not an unprimeable number, because it can be changed into a prime (117570647) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 75127 + ... + 76675.

It is an arithmetic number, because the mean of its divisors is an integer number (15206023).

Almost surely, 2^117570649 is an apocalyptic number.

117570649 is the 10843-rd square number.

117570649 is the 5422-nd centered octagonal number.

It is an amenable number.

117570649 is a deficient number, since it is larger than the sum of its proper divisors (19283558).

117570649 is an frugal number, since it uses more digits than its factorization.

117570649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3112 (or 1556 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 40.

The cubic root of 117570649 is about 489.8912003337.

It can be divided in two parts, 1175 and 70649, that added together give a square (71824 = 268²).

The spelling of 117570649 in words is "one hundred seventeen million, five hundred seventy thousand, six hundred forty-nine".