667571460 has 96 divisors (see below), whose sum is σ = 1988192640. Its totient is φ = 166883328.

The previous prime is 667571449. The next prime is 667571461. The reversal of 667571460 is 64175766.

It is not an unprimeable number, because it can be changed into a prime (667571461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107562 + ... + 113598.

It is an arithmetic number, because the mean of its divisors is an integer number (20710340).

Almost surely, 2^667571460 is an apocalyptic number.

667571460 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 667571460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (994096320).

667571460 is an abundant number, since it is smaller than the sum of its proper divisors (1320621180).

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

667571460 is a wasteful number, since it uses less digits than its factorization.

667571460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6165 (or 6163 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 42.

The square root of 667571460 is about 25837.4042813902. The cubic root of 667571460 is about 873.9754909719.

The spelling of 667571460 in words is "six hundred sixty-seven million, five hundred seventy-one thousand, four hundred sixty".