768778 has 8 divisors (see below), whose sum is σ = 1213920. Its totient is φ = 364140.

The previous prime is 768773. The next prime is 768787. The reversal of 768778 is 877867.

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

It is a super-2 number, since 2×768778² = 1182039226568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (768773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10078 + ... + 10153.

It is an arithmetic number, because the mean of its divisors is an integer number (151740).

2⁷⁶⁸⁷⁷⁸ is an apocalyptic number.

768778 is a deficient number, since it is larger than the sum of its proper divisors (445142).

768778 is a wasteful number, since it uses less digits than its factorization.

768778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20252.

The product of its digits is 131712, while the sum is 43.

The square root of 768778 is about 876.7998631387. The cubic root of 768778 is about 91.6080521516.

The spelling of 768778 in words is "seven hundred sixty-eight thousand, seven hundred seventy-eight".