776668 has 6 divisors (see below), whose sum is σ = 1359176. Its totient is φ = 388332.

The previous prime is 776651. The next prime is 776683. The reversal of 776668 is 866677.

It is a self number, because there is not a number n which added to its sum of digits gives 776668.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97080 + ... + 97087.

2⁷⁷⁶⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

776668 is a deficient number, since it is larger than the sum of its proper divisors (582508).

776668 is a wasteful number, since it uses less digits than its factorization.

776668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194171 (or 194169 counting only the distinct ones).

The product of its digits is 84672, while the sum is 40.

The square root of 776668 is about 881.2876942293. The cubic root of 776668 is about 91.9203784964.

Subtracting 776668 from its reverse (866677), we obtain a palindrome (90009).

It can be divided in two parts, 776 and 668, that added together give a square (1444 = 38²).

The spelling of 776668 in words is "seven hundred seventy-six thousand, six hundred sixty-eight".