816064613 has 8 divisors (see below), whose sum is σ = 1004387328. Its totient is φ = 645677424.

The previous prime is 816064609. The next prime is 816064661. The reversal of 816064613 is 316460618.

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

It is not a de Polignac number, because 816064613 - 2² = 816064609 is a prime.

It is a super-2 number, since 2×816064613² = 1331922905181679538, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816064673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4483781 + ... + 4483962.

It is an arithmetic number, because the mean of its divisors is an integer number (125548416).

Almost surely, 2^816064613 is an apocalyptic number.

It is an amenable number.

816064613 is a deficient number, since it is larger than the sum of its proper divisors (188322715).

816064613 is a wasteful number, since it uses less digits than its factorization.

816064613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8967763.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 816064613 is about 28566.8446454977. The cubic root of 816064613 is about 934.4904094953.

The spelling of 816064613 in words is "eight hundred sixteen million, sixty-four thousand, six hundred thirteen".