610040605 has 4 divisors (see below), whose sum is σ = 732048732. Its totient is φ = 488032480.

The previous prime is 610040593. The next prime is 610040609. The reversal of 610040605 is 506040016.

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 219662041 + 390378564 = 14821^2 + 19758^2 .

It is not a de Polignac number, because 610040605 - 2⁵ = 610040573 is a prime.

It is a super-3 number, since 3×610040605³ (a number of 27 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (610040609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61004056 + ... + 61004065.

It is an arithmetic number, because the mean of its divisors is an integer number (183012183).

Almost surely, 2^610040605 is an apocalyptic number.

It is an amenable number.

610040605 is a deficient number, since it is larger than the sum of its proper divisors (122008127).

610040605 is a wasteful number, since it uses less digits than its factorization.

610040605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122008126.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 610040605 is about 24699.0000809749. Note that the first 4 decimals coincide. The cubic root of 610040605 is about 848.1114263550. Note that the first 3 decimals are identical.

The spelling of 610040605 in words is "six hundred ten million, forty thousand, six hundred five".