2046666640 has 40 divisors (see below), whose sum is σ = 4761213120. Its totient is φ = 818199936.

The previous prime is 2046666613. The next prime is 2046666647. The reversal of 2046666640 is 466666402.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 2046666593 and 2046666602.

It is not an unprimeable number, because it can be changed into a prime (2046666647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156847 + ... + 169393.

It is an arithmetic number, because the mean of its divisors is an integer number (119030328).

Almost surely, 2^2046666640 is an apocalyptic number.

2046666640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2046666640 is an abundant number, since it is smaller than the sum of its proper divisors (2714546480).

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

2046666640 is a wasteful number, since it uses less digits than its factorization.

2046666640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14599 (or 14593 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 40.

The square root of 2046666640 is about 45240.0999114723. The cubic root of 2046666640 is about 1269.6451857713.

The spelling of 2046666640 in words is "two billion, forty-six million, six hundred sixty-six thousand, six hundred forty".