117724897 has 2 divisors, whose sum is σ = 117724898. Its totient is φ = 117724896.

The previous prime is 117724889. The next prime is 117724903. The reversal of 117724897 is 798427711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113720896 + 4004001 = 10664^2 + 2001^2 .

It is a cyclic number.

It is not a de Polignac number, because 117724897 - 2³ = 117724889 is a prime.

It is not a weakly prime, because it can be changed into another prime (117724877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58862448 + 58862449.

It is an arithmetic number, because the mean of its divisors is an integer number (58862449).

Almost surely, 2^117724897 is an apocalyptic number.

It is an amenable number.

117724897 is a deficient number, since it is larger than the sum of its proper divisors (1).

117724897 is an equidigital number, since it uses as much as digits as its factorization.

117724897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 197568, while the sum is 46.

The square root of 117724897 is about 10850.1104602672. The cubic root of 117724897 is about 490.1053459463.

It can be divided in two parts, 1177248 and 97, that added together give a triangular number (1177345 = T₁₅₃₄).

The spelling of 117724897 in words is "one hundred seventeen million, seven hundred twenty-four thousand, eight hundred ninety-seven".