605620331 has 4 divisors (see below), whose sum is σ = 607244352. Its totient is φ = 603996312.

The previous prime is 605620319. The next prime is 605620339. The reversal of 605620331 is 133026506.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-605620331 is a prime.

It is a super-2 number, since 2×605620331² = 733551970641099122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 605620331.

It is not an unprimeable number, because it can be changed into a prime (605620339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 811451 + ... + 812196.

It is an arithmetic number, because the mean of its divisors is an integer number (151811088).

Almost surely, 2^605620331 is an apocalyptic number.

605620331 is a deficient number, since it is larger than the sum of its proper divisors (1624021).

605620331 is a wasteful number, since it uses less digits than its factorization.

605620331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1624020.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 605620331 is about 24609.3545425312. The cubic root of 605620331 is about 846.0580241580.

Adding to 605620331 its reverse (133026506), we get a palindrome (738646837).

The spelling of 605620331 in words is "six hundred five million, six hundred twenty thousand, three hundred thirty-one".