699769921 has 8 divisors (see below), whose sum is σ = 705219680. Its totient is φ = 694334592.

The previous prime is 699769907. The next prime is 699769969. The reversal of 699769921 is 129967996.

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 699769921 - 2⁹ = 699769409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (699769901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106510 + ... + 112888.

It is an arithmetic number, because the mean of its divisors is an integer number (88152460).

Almost surely, 2^699769921 is an apocalyptic number.

It is an amenable number.

699769921 is a deficient number, since it is larger than the sum of its proper divisors (5449759).

699769921 is a wasteful number, since it uses less digits than its factorization.

699769921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7215.

The product of its digits is 3306744, while the sum is 58.

The square root of 699769921 is about 26453.1646689011. The cubic root of 699769921 is about 887.8067110516.

It can be divided in two parts, 69976 and 9921, that added together give a palindrome (79897).

The spelling of 699769921 in words is "six hundred ninety-nine million, seven hundred sixty-nine thousand, nine hundred twenty-one".