4426640685 has 40 divisors (see below), whose sum is σ = 7943950080. Its totient is φ = 2358261216.

The previous prime is 4426640681. The next prime is 4426640759. The reversal of 4426640685 is 5860466244.

It is not a de Polignac number, because 4426640685 - 2² = 4426640681 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 4426640685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4426640681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 392556 + ... + 403674.

It is an arithmetic number, because the mean of its divisors is an integer number (198598752).

Almost surely, 2^4426640685 is an apocalyptic number.

4426640685 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4426640685 is a deficient number, since it is larger than the sum of its proper divisors (3517309395).

4426640685 is a wasteful number, since it uses less digits than its factorization.

4426640685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12119 (or 12110 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 45.

The square root of 4426640685 is about 66533.0044789802. The cubic root of 4426640685 is about 1641.9430525523.

The spelling of 4426640685 in words is "four billion, four hundred twenty-six million, six hundred forty thousand, six hundred eighty-five".