66727448 has 16 divisors (see below), whose sum is σ = 132473880. Its totient is φ = 31401088.

The previous prime is 66727403. The next prime is 66727501. The reversal of 66727448 is 84472766.

It is a junction number, because it is equal to n+sod(n) for n = 66727399 and 66727408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245186 + ... + 245457.

Almost surely, 2^66727448 is an apocalyptic number.

66727448 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

66727448 is a deficient number, since it is larger than the sum of its proper divisors (65746432).

66727448 is a wasteful number, since it uses less digits than its factorization.

66727448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490666 (or 490662 counting only the distinct ones).

The product of its digits is 451584, while the sum is 44.

The square root of 66727448 is about 8168.6870426036. The cubic root of 66727448 is about 405.6033237230.

The spelling of 66727448 in words is "sixty-six million, seven hundred twenty-seven thousand, four hundred forty-eight".