605257315621 has 8 divisors (see below), whose sum is σ = 691964784320. Its totient is φ = 518610381408.

The previous prime is 605257315609. The next prime is 605257315643. The reversal of 605257315621 is 126513752506.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-605257315621 is a prime.

It is a super-2 number, since 2×605257315621² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (605257315681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15112191 + ... + 15152188.

It is an arithmetic number, because the mean of its divisors is an integer number (86495598040).

Almost surely, 2^605257315621 is an apocalyptic number.

It is an amenable number.

605257315621 is a deficient number, since it is larger than the sum of its proper divisors (86707468699).

605257315621 is a wasteful number, since it uses less digits than its factorization.

605257315621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30267243.

The product of its (nonzero) digits is 378000, while the sum is 43.

The spelling of 605257315621 in words is "six hundred five billion, two hundred fifty-seven million, three hundred fifteen thousand, six hundred twenty-one".