783668 has 12 divisors (see below), whose sum is σ = 1384992. Its totient is φ = 387960.

The previous prime is 783661. The next prime is 783677. The reversal of 783668 is 866387.

It is a super-2 number, since 2×783668² = 1228271068448, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (783661) by changing a digit.

783668 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 488 + ... + 1343.

It is an arithmetic number, because the mean of its divisors is an integer number (115416).

2⁷⁸³⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

783668 is a deficient number, since it is larger than the sum of its proper divisors (601324).

783668 is a wasteful number, since it uses less digits than its factorization.

783668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1942 (or 1940 counting only the distinct ones).

The product of its digits is 48384, while the sum is 38.

The square root of 783668 is about 885.2502471053. The cubic root of 783668 is about 92.1957081459.

The spelling of 783668 in words is "seven hundred eighty-three thousand, six hundred sixty-eight".