945825661 has 12 divisors (see below), whose sum is σ = 1041002172. Its totient is φ = 858704000.

The previous prime is 945825659. The next prime is 945825677. The reversal of 945825661 is 166528549.

945825661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 335439225 + 610386436 = 18315^2 + 24706^2 .

It is not a de Polignac number, because 945825661 - 2¹ = 945825659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (945825611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94581 + ... + 104101.

It is an arithmetic number, because the mean of its divisors is an integer number (86750181).

Almost surely, 2^945825661 is an apocalyptic number.

It is an amenable number.

945825661 is a deficient number, since it is larger than the sum of its proper divisors (95176511).

945825661 is a wasteful number, since it uses less digits than its factorization.

945825661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10364 (or 10353 counting only the distinct ones).

The product of its digits is 518400, while the sum is 46.

The square root of 945825661 is about 30754.2787429652. The cubic root of 945825661 is about 981.6056079442.

The spelling of 945825661 in words is "nine hundred forty-five million, eight hundred twenty-five thousand, six hundred sixty-one".