66948464 has 40 divisors (see below), whose sum is σ = 143240832. Its totient is φ = 30057920.

The previous prime is 66948403. The next prime is 66948473. The reversal of 66948464 is 46484966.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12317 + ... + 16899.

Almost surely, 2^66948464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66948464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71620416).

66948464 is an abundant number, since it is smaller than the sum of its proper divisors (76292368).

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

66948464 is a wasteful number, since it uses less digits than its factorization.

66948464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4685 (or 4679 counting only the distinct ones).

The product of its digits is 995328, while the sum is 47.

The square root of 66948464 is about 8182.2041040297. The cubic root of 66948464 is about 406.0506460475.

The spelling of 66948464 in words is "sixty-six million, nine hundred forty-eight thousand, four hundred sixty-four".