906685780 has 96 divisors (see below), whose sum is σ = 2556529920. Its totient is φ = 260858880.

The previous prime is 906685771. The next prime is 906685781. The reversal of 906685780 is 87586609.

906685780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (906685781) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2625 + ... + 42664.

It is an arithmetic number, because the mean of its divisors is an integer number (26630520).

Almost surely, 2^906685780 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 906685780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1278264960).

906685780 is an abundant number, since it is smaller than the sum of its proper divisors (1649844140).

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

906685780 is a wasteful number, since it uses less digits than its factorization.

906685780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45329 (or 45327 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 49.

The square root of 906685780 is about 30111.2234889252. The cubic root of 906685780 is about 967.8742480020.

It can be divided in two parts, 906 and 685780, that added together give a palindrome (686686).

The spelling of 906685780 in words is "nine hundred six million, six hundred eighty-five thousand, seven hundred eighty".