617420005557 has 8 divisors (see below), whose sum is σ = 823232042976. Its totient is φ = 411610652592.

The previous prime is 617420005487. The next prime is 617420005577. The reversal of 617420005557 is 755500024716.

It is a happy number.

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

It is not a de Polignac number, because 617420005557 - 2²⁰ = 617418956981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (617420005577) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53163 + ... + 1112504.

It is an arithmetic number, because the mean of its divisors is an integer number (102904005372).

Almost surely, 2^617420005557 is an apocalyptic number.

It is an amenable number.

617420005557 is a deficient number, since it is larger than the sum of its proper divisors (205812037419).

617420005557 is a wasteful number, since it uses less digits than its factorization.

617420005557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342227.

The product of its (nonzero) digits is 294000, while the sum is 42.

The spelling of 617420005557 in words is "six hundred seventeen billion, four hundred twenty million, five thousand, five hundred fifty-seven".