613326881 has 2 divisors, whose sum is σ = 613326882. Its totient is φ = 613326880.

The previous prime is 613326877. The next prime is 613326893. The reversal of 613326881 is 188623316.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 423989281 + 189337600 = 20591^2 + 13760^2 .

It is a cyclic number.

It is not a de Polignac number, because 613326881 - 2² = 613326877 is a prime.

It is a super-2 number, since 2×613326881² = 752339725914376322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (613326841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306663440 + 306663441.

It is an arithmetic number, because the mean of its divisors is an integer number (306663441).

Almost surely, 2^613326881 is an apocalyptic number.

It is an amenable number.

613326881 is a deficient number, since it is larger than the sum of its proper divisors (1).

613326881 is an equidigital number, since it uses as much as digits as its factorization.

613326881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 38.

The square root of 613326881 is about 24765.4372261020. The cubic root of 613326881 is about 849.6316193790.

The spelling of 613326881 in words is "six hundred thirteen million, three hundred twenty-six thousand, eight hundred eighty-one".