611473145 has 4 divisors (see below), whose sum is σ = 733767780. Its totient is φ = 489178512.

The previous prime is 611473111. The next prime is 611473151. The reversal of 611473145 is 541374116.

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 397962601 + 213510544 = 19949^2 + 14612^2 .

It is a cyclic number.

It is not a de Polignac number, because 611473145 - 2⁸ = 611472889 is a prime.

It is a super-3 number, since 3×611473145³ (a number of 27 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61147310 + ... + 61147319.

It is an arithmetic number, because the mean of its divisors is an integer number (183441945).

Almost surely, 2^611473145 is an apocalyptic number.

It is an amenable number.

611473145 is a deficient number, since it is larger than the sum of its proper divisors (122294635).

611473145 is a wasteful number, since it uses less digits than its factorization.

611473145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122294634.

The product of its digits is 10080, while the sum is 32.

The square root of 611473145 is about 24727.9830354196. The cubic root of 611473145 is about 848.7747722364.

The spelling of 611473145 in words is "six hundred eleven million, four hundred seventy-three thousand, one hundred forty-five".