614197391 has 2 divisors, whose sum is σ = 614197392. Its totient is φ = 614197390.

The previous prime is 614197387. The next prime is 614197411. The reversal of 614197391 is 193791416.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 614197391 - 2² = 614197387 is a prime.

It is a super-2 number, since 2×614197391² = 754476870222413762, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (614107391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307098695 + 307098696.

It is an arithmetic number, because the mean of its divisors is an integer number (307098696).

Almost surely, 2^614197391 is an apocalyptic number.

614197391 is a deficient number, since it is larger than the sum of its proper divisors (1).

614197391 is an equidigital number, since it uses as much as digits as its factorization.

614197391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 41.

The square root of 614197391 is about 24783.0060928855. The cubic root of 614197391 is about 850.0333970730.

The spelling of 614197391 in words is "six hundred fourteen million, one hundred ninety-seven thousand, three hundred ninety-one".