826718672 has 20 divisors (see below), whose sum is σ = 1724980740. Its totient is φ = 381562368.

The previous prime is 826718663. The next prime is 826718677. The reversal of 826718672 is 276817628.

It can be written as a sum of positive squares in 2 ways, for example, as 463282576 + 363436096 = 21524^2 + 19064^2 .

It is a super-3 number, since 3×826718672³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (826718677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1987097 + ... + 1987512.

It is an arithmetic number, because the mean of its divisors is an integer number (86249037).

Almost surely, 2^826718672 is an apocalyptic number.

It is an amenable number.

826718672 is an abundant number, since it is smaller than the sum of its proper divisors (898262068).

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

826718672 is a wasteful number, since it uses less digits than its factorization.

826718672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3974630 (or 3974624 counting only the distinct ones).

The product of its digits is 451584, while the sum is 47.

The square root of 826718672 is about 28752.7159065018. The cubic root of 826718672 is about 938.5395580062.

The spelling of 826718672 in words is "eight hundred twenty-six million, seven hundred eighteen thousand, six hundred seventy-two".