826868629 has 4 divisors (see below), whose sum is σ = 846098176. Its totient is φ = 807639084.

The previous prime is 826868617. The next prime is 826868639. The reversal of 826868629 is 926868628.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 826868629 - 2⁵ = 826868597 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 826868629.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (826868639) 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, 9614709 + ... + 9614794.

It is an arithmetic number, because the mean of its divisors is an integer number (211524544).

Almost surely, 2^826868629 is an apocalyptic number.

It is an amenable number.

826868629 is a deficient number, since it is larger than the sum of its proper divisors (19229547).

826868629 is a wasteful number, since it uses less digits than its factorization.

826868629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19229546.

The product of its digits is 3981312, while the sum is 55.

The square root of 826868629 is about 28755.3234897471. The cubic root of 826868629 is about 938.5963012380.

Subtracting 826868629 from its reverse (926868628), we obtain a palindrome (99999999).

The spelling of 826868629 in words is "eight hundred twenty-six million, eight hundred sixty-eight thousand, six hundred twenty-nine".