667234040 has 32 divisors (see below), whose sum is σ = 1637757360. Its totient is φ = 242630400.

The previous prime is 667234033. The next prime is 667234091. The reversal of 667234040 is 40432766.

It is a junction number, because it is equal to n+sod(n) for n = 667233988 and 667234006.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 757781 + ... + 758660.

Almost surely, 2^667234040 is an apocalyptic number.

It is an amenable number.

667234040 is an abundant number, since it is smaller than the sum of its proper divisors (970523320).

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

667234040 is a wasteful number, since it uses less digits than its factorization.

667234040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1516463 (or 1516459 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 32.

The square root of 667234040 is about 25830.8737753875. The cubic root of 667234040 is about 873.8282175955.

The spelling of 667234040 in words is "six hundred sixty-seven million, two hundred thirty-four thousand, forty".