667413630 has 192 divisors, whose sum is σ = 1953020160. Its totient is φ = 157068288.

The previous prime is 667413623. The next prime is 667413647. The reversal of 667413630 is 36314766.

It is a happy number.

667413630 is a `hidden beast` number, since 6 + 6 + 7 + 4 + 13 + 630 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2914356 + ... + 2914584.

It is an arithmetic number, because the mean of its divisors is an integer number (10171980).

Almost surely, 2^667413630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 667413630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (976510080).

667413630 is an abundant number, since it is smaller than the sum of its proper divisors (1285606530).

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

667413630 is a wasteful number, since it uses less digits than its factorization.

667413630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355 (or 352 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The square root of 667413630 is about 25834.3498079592. The cubic root of 667413630 is about 873.9066092456.

The spelling of 667413630 in words is "six hundred sixty-seven million, four hundred thirteen thousand, six hundred thirty".