667011902 has 4 divisors (see below), whose sum is σ = 1000517856. Its totient is φ = 333505950.

The previous prime is 667011899. The next prime is 667011907. The reversal of 667011902 is 209110766.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667011907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166752974 + ... + 166752977.

It is an arithmetic number, because the mean of its divisors is an integer number (250129464).

Almost surely, 2^667011902 is an apocalyptic number.

667011902 is a deficient number, since it is larger than the sum of its proper divisors (333505954).

667011902 is a wasteful number, since it uses less digits than its factorization.

667011902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333505953.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 667011902 is about 25826.5735629022. The cubic root of 667011902 is about 873.7312341353.

The spelling of 667011902 in words is "six hundred sixty-seven million, eleven thousand, nine hundred two".