664164614 has 8 divisors (see below), whose sum is σ = 1017443808. Its totient is φ = 325016680.

The previous prime is 664164607. The next prime is 664164623. The reversal of 664164614 is 416461466.

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

It is a super-2 number, since 2×664164614² = 882229268979537992, which contains 22 as substring.

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, 3532697 + ... + 3532884.

It is an arithmetic number, because the mean of its divisors is an integer number (127180476).

Almost surely, 2^664164614 is an apocalyptic number.

664164614 is a deficient number, since it is larger than the sum of its proper divisors (353279194).

664164614 is a wasteful number, since it uses less digits than its factorization.

664164614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7065630.

The product of its digits is 82944, while the sum is 38.

The square root of 664164614 is about 25771.3913865744. The cubic root of 664164614 is about 872.4862225009.

The spelling of 664164614 in words is "six hundred sixty-four million, one hundred sixty-four thousand, six hundred fourteen".