778056 has 32 divisors (see below), whose sum is σ = 2060640. Its totient is φ = 243968.

The previous prime is 778051. The next prime is 778061. The reversal of 778056 is 650877.

778056 is nontrivially palindromic in base 7.

It is an interprime number because it is at equal distance from previous prime (778051) and next prime (778061).

It is a super-2 number, since 2×778056² = 1210742278272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (778051) 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, 546 + ... + 1361.

It is an arithmetic number, because the mean of its divisors is an integer number (64395).

2⁷⁷⁸⁰⁵⁶ is an apocalyptic number.

It is an amenable number.

778056 is an abundant number, since it is smaller than the sum of its proper divisors (1282584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

778056 is a wasteful number, since it uses less digits than its factorization.

778056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1933 (or 1929 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 778056 is about 882.0748267579. The cubic root of 778056 is about 91.9751035342.

The spelling of 778056 in words is "seven hundred seventy-eight thousand, fifty-six".