690217911717 has 4 divisors (see below), whose sum is σ = 920290548960. Its totient is φ = 460145274476.

The previous prime is 690217911697. The next prime is 690217911731. The reversal of 690217911717 is 717119712096.

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.

It is a cyclic number.

It is not a de Polignac number, because 690217911717 - 2¹⁰ = 690217910693 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 690217911717.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690217913717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115036318617 + ... + 115036318622.

It is an arithmetic number, because the mean of its divisors is an integer number (230072637240).

Almost surely, 2^690217911717 is an apocalyptic number.

It is an amenable number.

690217911717 is a deficient number, since it is larger than the sum of its proper divisors (230072637243).

690217911717 is a wasteful number, since it uses less digits than its factorization.

690217911717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230072637242.

The product of its (nonzero) digits is 333396, while the sum is 51.

The spelling of 690217911717 in words is "six hundred ninety billion, two hundred seventeen million, nine hundred eleven thousand, seven hundred seventeen".