768837638 has 8 divisors (see below), whose sum is σ = 1167854880. Its totient is φ = 379552680.

The previous prime is 768837611. The next prime is 768837653. The reversal of 768837638 is 836738867.

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

It is a super-2 number, since 2×768837638² = 1182222627210838088, which contains 22 as substring.

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 in 3 ways as a sum of consecutive naturals, for example, 2432873 + ... + 2433188.

It is an arithmetic number, because the mean of its divisors is an integer number (145981860).

Almost surely, 2^768837638 is an apocalyptic number.

768837638 is a deficient number, since it is larger than the sum of its proper divisors (399017242).

768837638 is a wasteful number, since it uses less digits than its factorization.

768837638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4866142.

The product of its digits is 8128512, while the sum is 56.

The square root of 768837638 is about 27727.9216314530. The cubic root of 768837638 is about 916.1042092370.

The spelling of 768837638 in words is "seven hundred sixty-eight million, eight hundred thirty-seven thousand, six hundred thirty-eight".