664361542 has 8 divisors (see below), whose sum is σ = 1073199456. Its totient is φ = 306628392.

The previous prime is 664361531. The next prime is 664361569. The reversal of 664361542 is 245163466.

664361542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12776158 + ... + 12776209.

It is an arithmetic number, because the mean of its divisors is an integer number (134149932).

Almost surely, 2^664361542 is an apocalyptic number.

664361542 is a deficient number, since it is larger than the sum of its proper divisors (408837914).

664361542 is a wasteful number, since it uses less digits than its factorization.

664361542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25552382.

The product of its digits is 103680, while the sum is 37.

The square root of 664361542 is about 25775.2117741058. The cubic root of 664361542 is about 872.5724460989.

The spelling of 664361542 in words is "six hundred sixty-four million, three hundred sixty-one thousand, five hundred forty-two".