690729219 has 12 divisors (see below), whose sum is σ = 998361000. Its totient is φ = 460190304.

The previous prime is 690729187. The next prime is 690729229. The reversal of 690729219 is 912927096.

It is not a de Polignac number, because 690729219 - 2⁵ = 690729187 is a prime.

It is a super-2 number, since 2×690729219² = 954213707960699922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (690729229) 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 11 ways as a sum of consecutive naturals, for example, 9369 + ... + 38330.

It is an arithmetic number, because the mean of its divisors is an integer number (83196750).

Almost surely, 2^690729219 is an apocalyptic number.

690729219 is a deficient number, since it is larger than the sum of its proper divisors (307631781).

690729219 is a wasteful number, since it uses less digits than its factorization.

690729219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49314 (or 49311 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 690729219 is about 26281.7278541575. The cubic root of 690729219 is about 883.9667765781.

The spelling of 690729219 in words is "six hundred ninety million, seven hundred twenty-nine thousand, two hundred nineteen".