823674534 has 16 divisors (see below), whose sum is σ = 1657457472. Its totient is φ = 272873448.

The previous prime is 823674499. The next prime is 823674539. The reversal of 823674534 is 435476328.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (823674539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 420124 + ... + 422079.

It is an arithmetic number, because the mean of its divisors is an integer number (103591092).

Almost surely, 2^823674534 is an apocalyptic number.

823674534 is an abundant number, since it is smaller than the sum of its proper divisors (833782938).

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

823674534 is a wasteful number, since it uses less digits than its factorization.

823674534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842371.

The product of its digits is 483840, while the sum is 42.

The square root of 823674534 is about 28699.7305562265. The cubic root of 823674534 is about 937.3861798174.

The spelling of 823674534 in words is "eight hundred twenty-three million, six hundred seventy-four thousand, five hundred thirty-four".