616778322 has 16 divisors (see below), whose sum is σ = 1276093440. Its totient is φ = 198503312.

The previous prime is 616778311. The next prime is 616778329. The reversal of 616778322 is 223877616.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (616778329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1772178 + ... + 1772525.

It is an arithmetic number, because the mean of its divisors is an integer number (79755840).

Almost surely, 2^616778322 is an apocalyptic number.

616778322 is an abundant number, since it is smaller than the sum of its proper divisors (659315118).

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

616778322 is a wasteful number, since it uses less digits than its factorization.

616778322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3544737.

The product of its digits is 169344, while the sum is 42.

The square root of 616778322 is about 24835.0220857562. The cubic root of 616778322 is about 851.2223805892. Note that the first 3 decimals are identical.

The spelling of 616778322 in words is "six hundred sixteen million, seven hundred seventy-eight thousand, three hundred twenty-two".