667699041 has 4 divisors (see below), whose sum is σ = 890265392. Its totient is φ = 445132692.

The previous prime is 667699027. The next prime is 667699051. The reversal of 667699041 is 140996766.

667699041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 667699041 - 2¹⁴ = 667682657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667699051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111283171 + ... + 111283176.

It is an arithmetic number, because the mean of its divisors is an integer number (222566348).

Almost surely, 2^667699041 is an apocalyptic number.

It is an amenable number.

667699041 is a deficient number, since it is larger than the sum of its proper divisors (222566351).

667699041 is a wasteful number, since it uses less digits than its factorization.

667699041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222566350.

The product of its (nonzero) digits is 489888, while the sum is 48.

The square root of 667699041 is about 25839.8730840536. The cubic root of 667699041 is about 874.0311631965.

The spelling of 667699041 in words is "six hundred sixty-seven million, six hundred ninety-nine thousand, forty-one".