3664686558 has 64 divisors (see below), whose sum is σ = 8179315200. Its totient is φ = 1086852480.

The previous prime is 3664686539. The next prime is 3664686589. The reversal of 3664686558 is 8556864663.

It is a junction number, because it is equal to n+sod(n) for n = 3664686498 and 3664686507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1896853 + ... + 1898783.

It is an arithmetic number, because the mean of its divisors is an integer number (127801800).

Almost surely, 2^3664686558 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3664686558, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4089657600).

3664686558 is an abundant number, since it is smaller than the sum of its proper divisors (4514628642).

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

3664686558 is a wasteful number, since it uses less digits than its factorization.

3664686558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2817.

The product of its digits is 24883200, while the sum is 57.

The square root of 3664686558 is about 60536.6546647566. The cubic root of 3664686558 is about 1541.7440406117.

The spelling of 3664686558 in words is "three billion, six hundred sixty-four million, six hundred eighty-six thousand, five hundred fifty-eight".