283640706 has 72 divisors (see below), whose sum is σ = 653427684. Its totient is φ = 88865280.

The previous prime is 283640689. The next prime is 283640717. The reversal of 283640706 is 607046382.

283640706 is a `hidden beast` number, since 2 + 8 + 3 + 640 + 7 + 0 + 6 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 126765081 + 156875625 = 11259^2 + 12525^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 620430 + ... + 620886.

Almost surely, 2^283640706 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 283640706, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (326713842).

283640706 is an abundant number, since it is smaller than the sum of its proper divisors (369786978).

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

283640706 is a wasteful number, since it uses less digits than its factorization.

283640706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564 (or 532 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 283640706 is about 16841.6360844189. The cubic root of 283640706 is about 657.0365345988.

The spelling of 283640706 in words is "two hundred eighty-three million, six hundred forty thousand, seven hundred six".