3709582661 has 4 divisors (see below), whose sum is σ = 3754276512. Its totient is φ = 3664888812.

The previous prime is 3709582649. The next prime is 3709582663. The reversal of 3709582661 is 1662859073.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3709582661 - 2¹⁰ = 3709581637 is a prime.

It is a super-2 number, since 2×3709582661² = 27522007037583681842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3709582663) 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 3 ways as a sum of consecutive naturals, for example, 22346801 + ... + 22346966.

It is an arithmetic number, because the mean of its divisors is an integer number (938569128).

Almost surely, 2^3709582661 is an apocalyptic number.

It is an amenable number.

3709582661 is a deficient number, since it is larger than the sum of its proper divisors (44693851).

3709582661 is an equidigital number, since it uses as much as digits as its factorization.

3709582661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44693850.

The product of its (nonzero) digits is 544320, while the sum is 47.

The square root of 3709582661 is about 60906.3433560085. The cubic root of 3709582661 is about 1548.0144761859.

The spelling of 3709582661 in words is "three billion, seven hundred nine million, five hundred eighty-two thousand, six hundred sixty-one".