664054541 has 4 divisors (see below), whose sum is σ = 699004800. Its totient is φ = 629104284.

The previous prime is 664054483. The next prime is 664054553. The reversal of 664054541 is 145450466.

664054541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 664054541 - 2²² = 659860237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664054141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17475101 + ... + 17475138.

It is an arithmetic number, because the mean of its divisors is an integer number (174751200).

Almost surely, 2^664054541 is an apocalyptic number.

It is an amenable number.

664054541 is a deficient number, since it is larger than the sum of its proper divisors (34950259).

664054541 is a wasteful number, since it uses less digits than its factorization.

664054541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34950258.

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 664054541 is about 25769.2557323645. The cubic root of 664054541 is about 872.4380203535.

The spelling of 664054541 in words is "six hundred sixty-four million, fifty-four thousand, five hundred forty-one".