690106844 has 24 divisors (see below), whose sum is σ = 1389362688. Its totient is φ = 293799600.

The previous prime is 690106817. The next prime is 690106849. The reversal of 690106844 is 448601096.

It is a super-2 number, since 2×690106844² = 952494912271280672, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 690106798 and 690106807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690106849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77384 + ... + 85839.

It is an arithmetic number, because the mean of its divisors is an integer number (57890112).

Almost surely, 2^690106844 is an apocalyptic number.

It is an amenable number.

690106844 is an abundant number, since it is smaller than the sum of its proper divisors (699255844).

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

690106844 is a wasteful number, since it uses less digits than its factorization.

690106844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163385 (or 163383 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 690106844 is about 26269.8847351868. The cubic root of 690106844 is about 883.7012001753.

The spelling of 690106844 in words is "six hundred ninety million, one hundred six thousand, eight hundred forty-four".