113778681 has 8 divisors (see below), whose sum is σ = 154932864. Its totient is φ = 74238480.

The previous prime is 113778673. The next prime is 113778689. The reversal of 113778681 is 186877311.

It is an interprime number because it is at equal distance from previous prime (113778673) and next prime (113778689).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 113778681 - 2³ = 113778673 is a prime.

It is a super-2 number, since 2×113778681² = 25891176500199522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (113778689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 403330 + ... + 403611.

It is an arithmetic number, because the mean of its divisors is an integer number (19366608).

Almost surely, 2^113778681 is an apocalyptic number.

It is an amenable number.

113778681 is a deficient number, since it is larger than the sum of its proper divisors (41154183).

113778681 is an equidigital number, since it uses as much as digits as its factorization.

113778681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806991.

The product of its digits is 56448, while the sum is 42.

The square root of 113778681 is about 10666.7090051243. The cubic root of 113778681 is about 484.5667736558.

The spelling of 113778681 in words is "one hundred thirteen million, seven hundred seventy-eight thousand, six hundred eighty-one".