66394352 has 40 divisors (see below), whose sum is σ = 133079280. Its totient is φ = 32071680.

The previous prime is 66394351. The next prime is 66394397. The reversal of 66394352 is 25349366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66394351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57008 + ... + 58160.

It is an arithmetic number, because the mean of its divisors is an integer number (3326982).

Almost surely, 2^66394352 is an apocalyptic number.

It is an amenable number.

66394352 is an abundant number, since it is smaller than the sum of its proper divisors (66684928).

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

66394352 is a wasteful number, since it uses less digits than its factorization.

66394352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281 (or 1275 counting only the distinct ones).

The product of its digits is 116640, while the sum is 38.

The square root of 66394352 is about 8148.2729458456. The cubic root of 66394352 is about 404.9272886791.

The spelling of 66394352 in words is "sixty-six million, three hundred ninety-four thousand, three hundred fifty-two".