8690021699 has 4 divisors (see below), whose sum is σ = 9201199464. Its totient is φ = 8178843936.

The previous prime is 8690021693. The next prime is 8690021701. The reversal of 8690021699 is 9961200968.

8690021699 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8690021699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8690021693) 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 3 ways as a sum of consecutive naturals, for example, 255588857 + ... + 255588890.

It is an arithmetic number, because the mean of its divisors is an integer number (2300299866).

Almost surely, 2^8690021699 is an apocalyptic number.

8690021699 is a deficient number, since it is larger than the sum of its proper divisors (511177765).

8690021699 is a wasteful number, since it uses less digits than its factorization.

8690021699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511177764.

The product of its (nonzero) digits is 419904, while the sum is 50.

The square root of 8690021699 is about 93220.2858770558. The cubic root of 8690021699 is about 2055.9235137705.

The spelling of 8690021699 in words is "eight billion, six hundred ninety million, twenty-one thousand, six hundred ninety-nine".