667740048 has 40 divisors (see below), whose sum is σ = 1799997888. Its totient is φ = 212902272.

The previous prime is 667740041. The next prime is 667740053. The reversal of 667740048 is 840047766.

It is a junction number, because it is equal to n+sod(n) for n = 667739991 and 667740009.

It is not an unprimeable number, because it can be changed into a prime (667740041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 301315 + ... + 303522.

Almost surely, 2^667740048 is an apocalyptic number.

It is an amenable number.

667740048 is an abundant number, since it is smaller than the sum of its proper divisors (1132257840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

667740048 is a wasteful number, since it uses less digits than its factorization.

667740048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604871 (or 604865 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 42.

The square root of 667740048 is about 25840.6665548704. Note that the first 3 decimals coincide. The cubic root of 667740048 is about 874.0490558198.

The spelling of 667740048 in words is "six hundred sixty-seven million, seven hundred forty thousand, forty-eight".