616661363 has 2 divisors, whose sum is σ = 616661364. Its totient is φ = 616661362.

The previous prime is 616661329. The next prime is 616661377. The reversal of 616661363 is 363166616.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 616661363 - 2¹² = 616657267 is a prime.

It is not a weakly prime, because it can be changed into another prime (616621363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308330681 + 308330682.

It is an arithmetic number, because the mean of its divisors is an integer number (308330682).

Almost surely, 2^616661363 is an apocalyptic number.

616661363 is a deficient number, since it is larger than the sum of its proper divisors (1).

616661363 is an equidigital number, since it uses as much as digits as its factorization.

616661363 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 38.

The square root of 616661363 is about 24832.6672550493. The cubic root of 616661363 is about 851.1685717308.

The spelling of 616661363 in words is "six hundred sixteen million, six hundred sixty-one thousand, three hundred sixty-three".