264216646 has 8 divisors (see below), whose sum is σ = 396558864. Its totient is φ = 132030360.

The previous prime is 264216619. The next prime is 264216671. The reversal of 264216646 is 646612462.

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, 34650 + ... + 41581.

It is an arithmetic number, because the mean of its divisors is an integer number (49569858).

Almost surely, 2^264216646 is an apocalyptic number.

264216646 is a deficient number, since it is larger than the sum of its proper divisors (132342218).

264216646 is a wasteful number, since it uses less digits than its factorization.

264216646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77966.

The product of its digits is 82944, while the sum is 37.

The square root of 264216646 is about 16254.7422618755. The cubic root of 264216646 is about 641.6822976871.

The spelling of 264216646 in words is "two hundred sixty-four million, two hundred sixteen thousand, six hundred forty-six".