667206352 has 20 divisors (see below), whose sum is σ = 1306042276. Its totient is φ = 330163200.

The previous prime is 667206343. The next prime is 667206377. The reversal of 667206352 is 253602766.

It can be written as a sum of positive squares in 2 ways, for example, as 376981056 + 290225296 = 19416^2 + 17036^2 .

It is a super-2 number, since 2×667206352² = 890328632298295808, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 213399 + ... + 216502.

Almost surely, 2^667206352 is an apocalyptic number.

It is an amenable number.

667206352 is a deficient number, since it is larger than the sum of its proper divisors (638835924).

667206352 is a wasteful number, since it uses less digits than its factorization.

667206352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430006 (or 430000 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 37.

The square root of 667206352 is about 25830.3378220263. The cubic root of 667206352 is about 873.8161304372.

The spelling of 667206352 in words is "six hundred sixty-seven million, two hundred six thousand, three hundred fifty-two".