690214923 has 24 divisors (see below), whose sum is σ = 1009008000. Its totient is φ = 454616064.

The previous prime is 690214897. The next prime is 690214963. The reversal of 690214923 is 329412096.

It is not a de Polignac number, because 690214923 - 2⁶ = 690214859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (690214963) 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 23 ways as a sum of consecutive naturals, for example, 439686 + ... + 441252.

It is an arithmetic number, because the mean of its divisors is an integer number (42042000).

Almost surely, 2^690214923 is an apocalyptic number.

690214923 is a deficient number, since it is larger than the sum of its proper divisors (318793077).

690214923 is a wasteful number, since it uses less digits than its factorization.

690214923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2131 (or 2128 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 690214923 is about 26271.9417439975. The cubic root of 690214923 is about 883.7473304991.

The spelling of 690214923 in words is "six hundred ninety million, two hundred fourteen thousand, nine hundred twenty-three".