3326660640 has 144 divisors (see below), whose sum is σ = 12020096088. Its totient is φ = 834920448.

The previous prime is 3326660633. The next prime is 3326660647. The reversal of 3326660640 is 460666233.

It is an interprime number because it is at equal distance from previous prime (3326660633) and next prime (3326660647).

It can be written as a sum of positive squares in 4 ways, for example, as 2410024464 + 916636176 = 49092^2 + 30276^2 .

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×3326660640² = 22133342027450419200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 3326660595 and 3326660604.

It is not an unprimeable number, because it can be changed into a prime (3326660647) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43467 + ... + 92426.

Almost surely, 2^3326660640 is an apocalyptic number.

3326660640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3326660640 is an abundant number, since it is smaller than the sum of its proper divisors (8693435448).

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

3326660640 is a wasteful number, since it uses less digits than its factorization.

3326660640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135931 (or 135920 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 36.

The square root of 3326660640 is about 57677.2107508676. The cubic root of 3326660640 is about 1492.8041483465.

The spelling of 3326660640 in words is "three billion, three hundred twenty-six million, six hundred sixty thousand, six hundred forty".