826718642 has 4 divisors (see below), whose sum is σ = 1240077966. Its totient is φ = 413359320.

The previous prime is 826718623. The next prime is 826718657. The reversal of 826718642 is 246817628.

826718642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 819161641 + 7557001 = 28621^2 + 2749^2 .

It is a junction number, because it is equal to n+sod(n) for n = 826718593 and 826718602.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 206679659 + ... + 206679662.

Almost surely, 2^826718642 is an apocalyptic number.

826718642 is a deficient number, since it is larger than the sum of its proper divisors (413359324).

826718642 is a wasteful number, since it uses less digits than its factorization.

826718642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413359323.

The product of its digits is 258048, while the sum is 44.

The square root of 826718642 is about 28752.7153848119. The cubic root of 826718642 is about 938.5395466536.

The spelling of 826718642 in words is "eight hundred twenty-six million, seven hundred eighteen thousand, six hundred forty-two".