616836906 has 48 divisors (see below), whose sum is σ = 1533168000. Its totient is φ = 175574304.

The previous prime is 616836887. The next prime is 616836937. The reversal of 616836906 is 609638616.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24795 + ... + 42993.

It is an arithmetic number, because the mean of its divisors is an integer number (31941000).

Almost surely, 2^616836906 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 616836906, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (766584000).

616836906 is an abundant number, since it is smaller than the sum of its proper divisors (916331094).

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

616836906 is a wasteful number, since it uses less digits than its factorization.

616836906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18483 (or 18480 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 616836906 is about 24836.2015211666. The cubic root of 616836906 is about 851.2493305383.

The spelling of 616836906 in words is "six hundred sixteen million, eight hundred thirty-six thousand, nine hundred six".