667567098 has 96 divisors (see below), whose sum is σ = 1631290752. Its totient is φ = 195523200.

The previous prime is 667567097. The next prime is 667567129. The reversal of 667567098 is 890765766.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (667567093) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 2146363 + ... + 2146673.

It is an arithmetic number, because the mean of its divisors is an integer number (16992612).

Almost surely, 2^667567098 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 667567098, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (815645376).

667567098 is an abundant number, since it is smaller than the sum of its proper divisors (963723654).

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

667567098 is a wasteful number, since it uses less digits than its factorization.

667567098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660 (or 657 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 54.

The square root of 667567098 is about 25837.3198687480. The cubic root of 667567098 is about 873.9735874107.

It can be divided in two parts, 667 and 567098, that added together give a palindrome (567765).

The spelling of 667567098 in words is "six hundred sixty-seven million, five hundred sixty-seven thousand, ninety-eight".