3666643260 has 48 divisors (see below), whose sum is σ = 11733259776. Its totient is φ = 838089792.

The previous prime is 3666643259. The next prime is 3666643291. The reversal of 3666643260 is 623466663.

It is a super-2 number, since 2×3666643260² = 26888545592206855200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4364632 + ... + 4365471.

It is an arithmetic number, because the mean of its divisors is an integer number (244442912).

Almost surely, 2^3666643260 is an apocalyptic number.

3666643260 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3666643260 is an abundant number, since it is smaller than the sum of its proper divisors (8066616516).

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

3666643260 is a wasteful number, since it uses less digits than its factorization.

3666643260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8730122 (or 8730120 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 42.

The square root of 3666643260 is about 60552.8138074524. The cubic root of 3666643260 is about 1542.0183884854.

The spelling of 3666643260 in words is "three billion, six hundred sixty-six million, six hundred forty-three thousand, two hundred sixty".