116778646 has 4 divisors (see below), whose sum is σ = 175167972. Its totient is φ = 58389322.

The previous prime is 116778631. The next prime is 116778647. The reversal of 116778646 is 646877611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 646877611 = 61 ⋅10604551.

It is a junction number, because it is equal to n+sod(n) for n = 116778596 and 116778605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116778647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29194660 + ... + 29194663.

It is an arithmetic number, because the mean of its divisors is an integer number (43791993).

Almost surely, 2^116778646 is an apocalyptic number.

116778646 is a deficient number, since it is larger than the sum of its proper divisors (58389326).

116778646 is an equidigital number, since it uses as much as digits as its factorization.

116778646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58389325.

The product of its digits is 338688, while the sum is 46.

The square root of 116778646 is about 10806.4168899779. The cubic root of 116778646 is about 488.7886864849.

The spelling of 116778646 in words is "one hundred sixteen million, seven hundred seventy-eight thousand, six hundred forty-six".