816839601 has 8 divisors (see below), whose sum is σ = 1107579360. Its totient is φ = 535329792.

The previous prime is 816839587. The next prime is 816839623. The reversal of 816839601 is 106938618.

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

It is not a de Polignac number, because 816839601 - 2⁶ = 816839537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (816839671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2307280 + ... + 2307633.

It is an arithmetic number, because the mean of its divisors is an integer number (138447420).

Almost surely, 2^816839601 is an apocalyptic number.

It is an amenable number.

816839601 is a deficient number, since it is larger than the sum of its proper divisors (290739759).

816839601 is a wasteful number, since it uses less digits than its factorization.

816839601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4614975.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 816839601 is about 28580.4058928490. The cubic root of 816839601 is about 934.7861335134.

The spelling of 816839601 in words is "eight hundred sixteen million, eight hundred thirty-nine thousand, six hundred one".