667073740 has 24 divisors (see below), whose sum is σ = 1438717392. Its totient is φ = 259617600.

The previous prime is 667073713. The next prime is 667073801. The reversal of 667073740 is 47370766.

It is a junction number, because it is equal to n+sod(n) for n = 667073693 and 667073702.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 449986 + ... + 451465.

It is an arithmetic number, because the mean of its divisors is an integer number (59946558).

Almost surely, 2^667073740 is an apocalyptic number.

It is an amenable number.

667073740 is an abundant number, since it is smaller than the sum of its proper divisors (771643652).

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

667073740 is a wasteful number, since it uses less digits than its factorization.

667073740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901497 (or 901495 counting only the distinct ones).

The product of its (nonzero) digits is 148176, while the sum is 40.

The square root of 667073740 is about 25827.7707129361. The cubic root of 667073740 is about 873.7582342145.

The spelling of 667073740 in words is "six hundred sixty-seven million, seventy-three thousand, seven hundred forty".