611607253 has 2 divisors, whose sum is σ = 611607254. Its totient is φ = 611607252.

The previous prime is 611607247. The next prime is 611607281. The reversal of 611607253 is 352706116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 395134884 + 216472369 = 19878^2 + 14713^2 .

It is a cyclic number.

It is not a de Polignac number, because 611607253 - 2⁵ = 611607221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611607203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305803626 + 305803627.

It is an arithmetic number, because the mean of its divisors is an integer number (305803627).

Almost surely, 2^611607253 is an apocalyptic number.

It is an amenable number.

611607253 is a deficient number, since it is larger than the sum of its proper divisors (1).

611607253 is an equidigital number, since it uses as much as digits as its factorization.

611607253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 611607253 is about 24730.6945515083. The cubic root of 611607253 is about 848.8368186607.

The spelling of 611607253 in words is "six hundred eleven million, six hundred seven thousand, two hundred fifty-three".