1017620317 has 4 divisors (see below), whose sum is σ = 1162994656. Its totient is φ = 872245980.

The previous prime is 1017620309. The next prime is 1017620347. The reversal of 1017620317 is 7130267101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7130267101 = 15511 ⋅459691.

It is a cyclic number.

It is not a de Polignac number, because 1017620317 - 2³ = 1017620309 is a prime.

It is a super-2 number, since 2×1017620317² = 2071102219142360978, which 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 (1017620347) 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 3 ways as a sum of consecutive naturals, for example, 72687159 + ... + 72687172.

It is an arithmetic number, because the mean of its divisors is an integer number (290748664).

Almost surely, 2^1017620317 is an apocalyptic number.

It is an amenable number.

1017620317 is a deficient number, since it is larger than the sum of its proper divisors (145374339).

1017620317 is an equidigital number, since it uses as much as digits as its factorization.

1017620317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145374338.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 1017620317 is about 31900.1617080541. The cubic root of 1017620317 is about 1005.8392754942.

Adding to 1017620317 its reverse (7130267101), we get a palindrome (8147887418).

The spelling of 1017620317 in words is "one billion, seventeen million, six hundred twenty thousand, three hundred seventeen".