3572387661 has 8 divisors (see below), whose sum is σ = 4763460384. Its totient is φ = 2381453360.

The previous prime is 3572387659. The next prime is 3572387671. The reversal of 3572387661 is 1667832753.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3572387661 - 2¹ = 3572387659 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3572387661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3572387671) 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, 77491 + ... + 114671.

It is an arithmetic number, because the mean of its divisors is an integer number (595432548).

Almost surely, 2^3572387661 is an apocalyptic number.

It is an amenable number.

3572387661 is a deficient number, since it is larger than the sum of its proper divisors (1191072723).

3572387661 is a wasteful number, since it uses less digits than its factorization.

3572387661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69211.

The product of its digits is 1270080, while the sum is 48.

The square root of 3572387661 is about 59769.4542471320. The cubic root of 3572387661 is about 1528.6903599292.

The spelling of 3572387661 in words is "three billion, five hundred seventy-two million, three hundred eighty-seven thousand, six hundred sixty-one".