613747493 has 2 divisors, whose sum is σ = 613747494. Its totient is φ = 613747492.

The previous prime is 613747487. The next prime is 613747507. The reversal of 613747493 is 394747316.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 581677924 + 32069569 = 24118^2 + 5663^2 .

It is a cyclic number.

It is not a de Polignac number, because 613747493 - 2¹² = 613743397 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (613747423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306873746 + 306873747.

It is an arithmetic number, because the mean of its divisors is an integer number (306873747).

Almost surely, 2^613747493 is an apocalyptic number.

It is an amenable number.

613747493 is a deficient number, since it is larger than the sum of its proper divisors (1).

613747493 is an equidigital number, since it uses as much as digits as its factorization.

613747493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 44.

The square root of 613747493 is about 24773.9276861785. The cubic root of 613747493 is about 849.8257972879.

The spelling of 613747493 in words is "six hundred thirteen million, seven hundred forty-seven thousand, four hundred ninety-three".