768638 has 32 divisors (see below), whose sum is σ = 1378944. Its totient is φ = 317952.

The previous prime is 768631. The next prime is 768641. The reversal of 768638 is 836867.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (768631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16331 + ... + 16377.

It is an arithmetic number, because the mean of its divisors is an integer number (43092).

2⁷⁶⁸⁶³⁸ is an apocalyptic number.

768638 is a deficient number, since it is larger than the sum of its proper divisors (610306).

768638 is a wasteful number, since it uses less digits than its factorization.

768638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116.

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

The square root of 768638 is about 876.7200237248. The cubic root of 768638 is about 91.6024909857.

It can be divided in two parts, 768 and 638, that multiplied together give a palindrome (489984).

The spelling of 768638 in words is "seven hundred sixty-eight thousand, six hundred thirty-eight".