117572643 has 24 divisors (see below), whose sum is σ = 175030128. Its totient is φ = 75995712.

The previous prime is 117572639. The next prime is 117572647. The reversal of 117572643 is 346275711.

It is a happy number.

117572643 is a `hidden beast` number, since 1 + 1 + 7 + 5 + 7 + 2 + 643 = 666.

It is an interprime number because it is at equal distance from previous prime (117572639) and next prime (117572647).

It is not a de Polignac number, because 117572643 - 2² = 117572639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 117572598 and 117572607.

It is not an unprimeable number, because it can be changed into a prime (117572647) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 147121 + ... + 147917.

It is an arithmetic number, because the mean of its divisors is an integer number (7292922).

Almost surely, 2^117572643 is an apocalyptic number.

117572643 is a deficient number, since it is larger than the sum of its proper divisors (57457485).

117572643 is a wasteful number, since it uses less digits than its factorization.

117572643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1283 (or 1280 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 117572643 is about 10843.0919483328. The cubic root of 117572643 is about 489.8939698388.

It can be divided in two parts, 11757 and 2643, that added together give a square (14400 = 120²).

The spelling of 117572643 in words is "one hundred seventeen million, five hundred seventy-two thousand, six hundred forty-three".