664036562 has 8 divisors (see below), whose sum is σ = 1138348416. Its totient is φ = 284587092.

The previous prime is 664036561. The next prime is 664036619. The reversal of 664036562 is 265630466.

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

It is not an unprimeable number, because it can be changed into a prime (664036561) 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, 23715578 + ... + 23715605.

It is an arithmetic number, because the mean of its divisors is an integer number (142293552).

Almost surely, 2^664036562 is an apocalyptic number.

664036562 is a deficient number, since it is larger than the sum of its proper divisors (474311854).

664036562 is a wasteful number, since it uses less digits than its factorization.

664036562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47431192.

The product of its (nonzero) digits is 155520, while the sum is 38.

The square root of 664036562 is about 25768.9068840725. The cubic root of 664036562 is about 872.4301466505.

The spelling of 664036562 in words is "six hundred sixty-four million, thirty-six thousand, five hundred sixty-two".