667284494 has 8 divisors (see below), whose sum is σ = 1001220960. Its totient is φ = 333544176.

The previous prime is 667284491. The next prime is 667284511. The reversal of 667284494 is 494482766.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667284491) 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, 40214 + ... + 54329.

It is an arithmetic number, because the mean of its divisors is an integer number (125152620).

Almost surely, 2^667284494 is an apocalyptic number.

667284494 is a deficient number, since it is larger than the sum of its proper divisors (333936466).

667284494 is a wasteful number, since it uses less digits than its factorization.

667284494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98074.

The product of its digits is 2322432, while the sum is 50.

The square root of 667284494 is about 25831.8503789411. The cubic root of 667284494 is about 873.8502423599.

The spelling of 667284494 in words is "six hundred sixty-seven million, two hundred eighty-four thousand, four hundred ninety-four".