667948 has 6 divisors (see below), whose sum is σ = 1168916. Its totient is φ = 333972.

The previous prime is 667921. The next prime is 667949. The reversal of 667948 is 849766.

It is a self number, because there is not a number n which added to its sum of digits gives 667948.

It is not an unprimeable number, because it can be changed into a prime (667949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83490 + ... + 83497.

2⁶⁶⁷⁹⁴⁸ is an apocalyptic number.

It is an amenable number.

667948 is a deficient number, since it is larger than the sum of its proper divisors (500968).

667948 is a wasteful number, since it uses less digits than its factorization.

667948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166991 (or 166989 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 667948 is about 817.2808574780. The cubic root of 667948 is about 87.4139780439.

The spelling of 667948 in words is "six hundred sixty-seven thousand, nine hundred forty-eight".