664112616 has 32 divisors (see below), whose sum is σ = 1757946240. Its totient is φ = 208348928.

The previous prime is 664112549. The next prime is 664112621. The reversal of 664112616 is 616211466.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 813456 + ... + 814271.

It is an arithmetic number, because the mean of its divisors is an integer number (54935820).

Almost surely, 2^664112616 is an apocalyptic number.

It is an amenable number.

664112616 is an abundant number, since it is smaller than the sum of its proper divisors (1093833624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

664112616 is a wasteful number, since it uses less digits than its factorization.

664112616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1627753 (or 1627749 counting only the distinct ones).

The product of its digits is 10368, while the sum is 33.

The square root of 664112616 is about 25770.3825349955. The cubic root of 664112616 is about 872.4634526827.

The spelling of 664112616 in words is "six hundred sixty-four million, one hundred twelve thousand, six hundred sixteen".