6664401541 has 8 divisors (see below), whose sum is σ = 7617046464. Its totient is φ = 5711903520.

The previous prime is 6664401533. The next prime is 6664401551. The reversal of 6664401541 is 1451044666.

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 6664401541 - 2³ = 6664401533 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6664401541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6664401551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89361 + ... + 145993.

It is an arithmetic number, because the mean of its divisors is an integer number (952130808).

Almost surely, 2^6664401541 is an apocalyptic number.

It is an amenable number.

6664401541 is a deficient number, since it is larger than the sum of its proper divisors (952644923).

6664401541 is a wasteful number, since it uses less digits than its factorization.

6664401541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73451.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 6664401541 is about 81635.7859091220. The cubic root of 6664401541 is about 1881.8588771300.

The spelling of 6664401541 in words is "six billion, six hundred sixty-four million, four hundred one thousand, five hundred forty-one".