611290065 has 16 divisors (see below), whose sum is σ = 987562368. Its totient is φ = 322855296.

The previous prime is 611290051. The next prime is 611290073. The reversal of 611290065 is 560092116.

It is not a de Polignac number, because 611290065 - 2¹³ = 611281873 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196284 + ... + 199373.

It is an arithmetic number, because the mean of its divisors is an integer number (61722648).

Almost surely, 2^611290065 is an apocalyptic number.

It is an amenable number.

611290065 is a deficient number, since it is larger than the sum of its proper divisors (376272303).

611290065 is a wasteful number, since it uses less digits than its factorization.

611290065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395768.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 611290065 is about 24724.2808793299. The cubic root of 611290065 is about 848.6900537726.

The spelling of 611290065 in words is "six hundred eleven million, two hundred ninety thousand, sixty-five".