611724401 has 2 divisors, whose sum is σ = 611724402. Its totient is φ = 611724400.

The previous prime is 611724343. The next prime is 611724419. The reversal of 611724401 is 104427116.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 581967376 + 29757025 = 24124^2 + 5455^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-611724401 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (611724431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305862200 + 305862201.

It is an arithmetic number, because the mean of its divisors is an integer number (305862201).

Almost surely, 2^611724401 is an apocalyptic number.

It is an amenable number.

611724401 is a deficient number, since it is larger than the sum of its proper divisors (1).

611724401 is an equidigital number, since it uses as much as digits as its factorization.

611724401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 611724401 is about 24733.0629118191. The cubic root of 611724401 is about 848.8910109478.

The spelling of 611724401 in words is "six hundred eleven million, seven hundred twenty-four thousand, four hundred one".