866690090389 has 8 divisors (see below), whose sum is σ = 928814762880. Its totient is φ = 806602292496.

The previous prime is 866690090377. The next prime is 866690090401. The reversal of 866690090389 is 983090096668.

It is an interprime number because it is at equal distance from previous prime (866690090377) and next prime (866690090401).

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 866690090389 - 2⁹ = 866690089877 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 866690090389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866690090359) 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, 509217769 + ... + 509219470.

It is an arithmetic number, because the mean of its divisors is an integer number (116101845360).

Almost surely, 2^866690090389 is an apocalyptic number.

It is an amenable number.

866690090389 is a deficient number, since it is larger than the sum of its proper divisors (62124672491).

866690090389 is a wasteful number, since it uses less digits than its factorization.

866690090389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018437299.

The product of its (nonzero) digits is 30233088, while the sum is 64.

The spelling of 866690090389 in words is "eight hundred sixty-six billion, six hundred ninety million, ninety thousand, three hundred eighty-nine".