611087401 has 2 divisors, whose sum is σ = 611087402. Its totient is φ = 611087400.

The previous prime is 611087383. The next prime is 611087431. The reversal of 611087401 is 104780116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 570063376 + 41024025 = 23876^2 + 6405^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-611087401 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 611087401.

It is not a weakly prime, because it can be changed into another prime (611087431) 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, 305543700 + 305543701.

It is an arithmetic number, because the mean of its divisors is an integer number (305543701).

Almost surely, 2^611087401 is an apocalyptic number.

It is an amenable number.

611087401 is a deficient number, since it is larger than the sum of its proper divisors (1).

611087401 is an equidigital number, since it uses as much as digits as its factorization.

611087401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 611087401 is about 24720.1820583911. The cubic root of 611087401 is about 848.5962532774.

The spelling of 611087401 in words is "six hundred eleven million, eighty-seven thousand, four hundred one".