616541677 has 2 divisors, whose sum is σ = 616541678. Its totient is φ = 616541676.

The previous prime is 616541663. The next prime is 616541683. The reversal of 616541677 is 776145616.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 572836356 + 43705321 = 23934^2 + 6611^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-616541677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (616541377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308270838 + 308270839.

It is an arithmetic number, because the mean of its divisors is an integer number (308270839).

Almost surely, 2^616541677 is an apocalyptic number.

It is an amenable number.

616541677 is a deficient number, since it is larger than the sum of its proper divisors (1).

616541677 is an equidigital number, since it uses as much as digits as its factorization.

616541677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 43.

The square root of 616541677 is about 24830.2572882361. The cubic root of 616541677 is about 851.1135012285.

The spelling of 616541677 in words is "six hundred sixteen million, five hundred forty-one thousand, six hundred seventy-seven".