690106462085252 has 12 divisors (see below), whose sum is σ = 1207701257862540. Its totient is φ = 345048959838816.

The previous prime is 690106462085239. The next prime is 690106462085263. The reversal of 690106462085252 is 252580264601096.

It can be written as a sum of positive squares in 2 ways, for example, as 348283456821316 + 341823005263936 = 18662354^2 + 18488456^2 .

It is a super-3 number, since 3×690106462085252³ (a number of 45 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1067437403 + ... + 1068083714.

It is an arithmetic number, because the mean of its divisors is an integer number (100641771488545).

Almost surely, 2^{690106462085252} is an apocalyptic number.

It is an amenable number.

690106462085252 is a deficient number, since it is larger than the sum of its proper divisors (517594795777288).

690106462085252 is a wasteful number, since it uses less digits than its factorization.

690106462085252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2135601910 (or 2135601908 counting only the distinct ones).

The product of its (nonzero) digits is 12441600, while the sum is 56.

The spelling of 690106462085252 in words is "six hundred ninety trillion, one hundred six billion, four hundred sixty-two million, eighty-five thousand, two hundred fifty-two".