667110040 has 16 divisors (see below), whose sum is σ = 1500997680. Its totient is φ = 266844000.

The previous prime is 667109983. The next prime is 667110043. The reversal of 667110040 is 40011766.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 667109987 and 667110014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667110043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8338836 + ... + 8338915.

It is an arithmetic number, because the mean of its divisors is an integer number (93812355).

Almost surely, 2^667110040 is an apocalyptic number.

It is an amenable number.

667110040 is an abundant number, since it is smaller than the sum of its proper divisors (833887640).

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

667110040 is a wasteful number, since it uses less digits than its factorization.

667110040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16677762 (or 16677758 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 667110040 is about 25828.4734353388. The cubic root of 667110040 is about 873.7740829614.

The spelling of 667110040 in words is "six hundred sixty-seven million, one hundred ten thousand, forty".