614888993 has 2 divisors, whose sum is σ = 614888994. Its totient is φ = 614888992.

The previous prime is 614888971. The next prime is 614889029. The reversal of 614888993 is 399888416.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 587189824 + 27699169 = 24232^2 + 5263^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-614888993 is a prime.

It is not a weakly prime, because it can be changed into another prime (614888893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307444496 + 307444497.

It is an arithmetic number, because the mean of its divisors is an integer number (307444497).

Almost surely, 2^614888993 is an apocalyptic number.

It is an amenable number.

614888993 is a deficient number, since it is larger than the sum of its proper divisors (1).

614888993 is an equidigital number, since it uses as much as digits as its factorization.

614888993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2985984, while the sum is 56.

The square root of 614888993 is about 24796.9553171352. The cubic root of 614888993 is about 850.3523305225.

The spelling of 614888993 in words is "six hundred fourteen million, eight hundred eighty-eight thousand, nine hundred ninety-three".