616673889 has 24 divisors (see below), whose sum is σ = 962735592. Its totient is φ = 378120960.

The previous prime is 616673873. The next prime is 616673903. The reversal of 616673889 is 988376616.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 67568400 + 549105489 = 8220^2 + 23433^2 .

It is not a de Polignac number, because 616673889 - 2⁴ = 616673873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (616673809) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23499 + ... + 42255.

It is an arithmetic number, because the mean of its divisors is an integer number (40113983).

Almost surely, 2^616673889 is an apocalyptic number.

It is an amenable number.

616673889 is a deficient number, since it is larger than the sum of its proper divisors (346061703).

616673889 is a wasteful number, since it uses less digits than its factorization.

616673889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19057 (or 19054 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 616673889 is about 24832.9194618756. The cubic root of 616673889 is about 851.1743348427.

It can be divided in two parts, 61667 and 3889, that added together give a palindrome (65556).

The spelling of 616673889 in words is "six hundred sixteen million, six hundred seventy-three thousand, eight hundred eighty-nine".