768621854 has 64 divisors (see below), whose sum is σ = 1553610240. Its totient is φ = 275425920.

The previous prime is 768621827. The next prime is 768621857. The reversal of 768621854 is 458126867.

It is a junction number, because it is equal to n+sod(n) for n = 768621799 and 768621808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (768621857) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 758252 + ... + 759264.

It is an arithmetic number, because the mean of its divisors is an integer number (24275160).

Almost surely, 2^768621854 is an apocalyptic number.

768621854 is an abundant number, since it is smaller than the sum of its proper divisors (784988386).

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

768621854 is a wasteful number, since it uses less digits than its factorization.

768621854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1425.

The product of its digits is 645120, while the sum is 47.

The square root of 768621854 is about 27724.0302625719. The cubic root of 768621854 is about 916.0184958095.

The spelling of 768621854 in words is "seven hundred sixty-eight million, six hundred twenty-one thousand, eight hundred fifty-four".