1217612671 has 8 divisors (see below), whose sum is σ = 1341457488. Its totient is φ = 1095960000.

The previous prime is 1217612659. The next prime is 1217612689. The reversal of 1217612671 is 1762167121.

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

It is a cyclic number.

It is not a de Polignac number, because 1217612671 - 2¹⁵ = 1217579903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1217612971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 546870 + ... + 549091.

It is an arithmetic number, because the mean of its divisors is an integer number (167682186).

Almost surely, 2^1217612671 is an apocalyptic number.

1217612671 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1217612671 is a deficient number, since it is larger than the sum of its proper divisors (123844817).

1217612671 is a wasteful number, since it uses less digits than its factorization.

1217612671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096073.

The product of its digits is 7056, while the sum is 34.

The square root of 1217612671 is about 34894.3071431430. The cubic root of 1217612671 is about 1067.8322990739.

Adding to 1217612671 its reverse (1762167121), we get a palindrome (2979779792).

The spelling of 1217612671 in words is "one billion, two hundred seventeen million, six hundred twelve thousand, six hundred seventy-one".