618472285 has 4 divisors (see below), whose sum is σ = 742166748. Its totient is φ = 494777824.

The previous prime is 618472273. The next prime is 618472297. The reversal of 618472285 is 582274816.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (618472273) and next prime (618472297).

It can be written as a sum of positive squares in 2 ways, for example, as 465653241 + 152819044 = 21579^2 + 12362^2 .

It is a cyclic number.

It is not a de Polignac number, because 618472285 - 2⁹ = 618471773 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 61847224 + ... + 61847233.

It is an arithmetic number, because the mean of its divisors is an integer number (185541687).

Almost surely, 2^618472285 is an apocalyptic number.

It is an amenable number.

618472285 is a deficient number, since it is larger than the sum of its proper divisors (123694463).

618472285 is a wasteful number, since it uses less digits than its factorization.

618472285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123694462.

The product of its digits is 215040, while the sum is 43.

The square root of 618472285 is about 24869.1030196105. The cubic root of 618472285 is about 852.0009537522. Note that the first 3 decimals are identical.

The spelling of 618472285 in words is "six hundred eighteen million, four hundred seventy-two thousand, two hundred eighty-five".