667497474 has 96 divisors (see below), whose sum is σ = 1757383680. Its totient is φ = 178855776.

The previous prime is 667497451. The next prime is 667497499. The reversal of 667497474 is 474794766.

It is a self number, because there is not a number n which added to its sum of digits gives 667497474.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 245229 + ... + 247935.

It is an arithmetic number, because the mean of its divisors is an integer number (18306080).

Almost surely, 2^667497474 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 667497474, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (878691840).

667497474 is an abundant number, since it is smaller than the sum of its proper divisors (1089886206).

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

667497474 is a wasteful number, since it uses less digits than its factorization.

667497474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2844 (or 2841 counting only the distinct ones).

The product of its digits is 7112448, while the sum is 54.

The square root of 667497474 is about 25835.9724802454. The cubic root of 667497474 is about 873.9432026235.

The spelling of 667497474 in words is "six hundred sixty-seven million, four hundred ninety-seven thousand, four hundred seventy-four".