690009219 has 16 divisors (see below), whose sum is σ = 1024491040. Its totient is φ = 458991360.

The previous prime is 690009211. The next prime is 690009233. The reversal of 690009219 is 912900096.

It is not a de Polignac number, because 690009219 - 2³ = 690009211 is a prime.

It is a super-2 number, since 2×690009219² = 952225444609979922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (690009211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15622 + ... + 40299.

It is an arithmetic number, because the mean of its divisors is an integer number (64030690).

Almost surely, 2^690009219 is an apocalyptic number.

690009219 is a deficient number, since it is larger than the sum of its proper divisors (334481821).

690009219 is a wasteful number, since it uses less digits than its factorization.

690009219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56387 (or 56381 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The square root of 690009219 is about 26268.0265532072. The cubic root of 690009219 is about 883.6595276919.

The spelling of 690009219 in words is "six hundred ninety million, nine thousand, two hundred nineteen".