611253065 has 4 divisors (see below), whose sum is σ = 733503684. Its totient is φ = 489002448.

The previous prime is 611253059. The next prime is 611253107. The reversal of 611253065 is 560352116.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 198838201 + 412414864 = 14101^2 + 20308^2 .

It is a cyclic number.

It is not a de Polignac number, because 611253065 - 2¹⁰ = 611252041 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61125302 + ... + 61125311.

It is an arithmetic number, because the mean of its divisors is an integer number (183375921).

Almost surely, 2^611253065 is an apocalyptic number.

It is an amenable number.

611253065 is a deficient number, since it is larger than the sum of its proper divisors (122250619).

611253065 is a wasteful number, since it uses less digits than its factorization.

611253065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122250618.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 611253065 is about 24723.5326157085. The cubic root of 611253065 is about 848.6729303330.

The spelling of 611253065 in words is "six hundred eleven million, two hundred fifty-three thousand, sixty-five".