117578723 has 4 divisors (see below), whose sum is σ = 118720368. Its totient is φ = 116437080.

The previous prime is 117578653. The next prime is 117578761. The reversal of 117578723 is 327875711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 327875711 = 29 ⋅11306059.

It is a cyclic number.

It is not a de Polignac number, because 117578723 - 2¹² = 117574627 is a prime.

It is a super-2 number, since 2×117578723² = 27649512204621458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117572723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 570668 + ... + 570873.

It is an arithmetic number, because the mean of its divisors is an integer number (29680092).

Almost surely, 2^117578723 is an apocalyptic number.

117578723 is a deficient number, since it is larger than the sum of its proper divisors (1141645).

117578723 is a wasteful number, since it uses less digits than its factorization.

117578723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1141644.

The product of its digits is 82320, while the sum is 41.

The square root of 117578723 is about 10843.3723075434. The cubic root of 117578723 is about 489.9024142748.

The spelling of 117578723 in words is "one hundred seventeen million, five hundred seventy-eight thousand, seven hundred twenty-three".