616419977 has 8 divisors (see below), whose sum is σ = 618921000. Its totient is φ = 613924864.

The previous prime is 616419971. The next prime is 616420043. The reversal of 616419977 is 779914616.

616419977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 413756281 + 202663696 = 20341^2 + 14236^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 616419977 - 2¹⁶ = 616354441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616419971) 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, 362393 + ... + 364089.

It is an arithmetic number, because the mean of its divisors is an integer number (77365125).

Almost surely, 2^616419977 is an apocalyptic number.

It is an amenable number.

616419977 is a deficient number, since it is larger than the sum of its proper divisors (2501023).

616419977 is a wasteful number, since it uses less digits than its factorization.

616419977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2955.

The product of its digits is 571536, while the sum is 50.

The square root of 616419977 is about 24827.8065281651. The cubic root of 616419977 is about 851.0574967262.

The spelling of 616419977 in words is "six hundred sixteen million, four hundred nineteen thousand, nine hundred seventy-seven".