116772581 has 4 divisors (see below), whose sum is σ = 119257152. Its totient is φ = 114288012.

The previous prime is 116772571. The next prime is 116772583. The reversal of 116772581 is 185277611.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 116772581 - 2⁶ = 116772517 is a prime.

It is a super-2 number, since 2×116772581² = 27271671346803122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116772583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1242215 + ... + 1242308.

It is an arithmetic number, because the mean of its divisors is an integer number (29814288).

Almost surely, 2^116772581 is an apocalyptic number.

It is an amenable number.

116772581 is a deficient number, since it is larger than the sum of its proper divisors (2484571).

116772581 is an equidigital number, since it uses as much as digits as its factorization.

116772581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2484570.

The product of its digits is 23520, while the sum is 38.

The square root of 116772581 is about 10806.1362660296. The cubic root of 116772581 is about 488.7802244507.

The spelling of 116772581 in words is "one hundred sixteen million, seven hundred seventy-two thousand, five hundred eighty-one".