66798432 has 60 divisors (see below), whose sum is σ = 196459956. Its totient is φ = 22265280.

The previous prime is 66798427. The next prime is 66798449. The reversal of 66798432 is 23489766.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 10294 + ... + 15477.

Almost surely, 2^66798432 is an apocalyptic number.

It is an amenable number.

66798432 is an abundant number, since it is smaller than the sum of its proper divisors (129661524).

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

66798432 is a wasteful number, since it uses less digits than its factorization.

66798432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25793 (or 25776 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 66798432 is about 8173.0307719964. The cubic root of 66798432 is about 405.7470983560.

It can be divided in two parts, 667 and 98432, that added together give a palindrome (99099).

The spelling of 66798432 in words is "sixty-six million, seven hundred ninety-eight thousand, four hundred thirty-two".