66725748 has 48 divisors (see below), whose sum is σ = 183173760. Its totient is φ = 20932992.

The previous prime is 66725717. The next prime is 66725749. The reversal of 66725748 is 84752766.

66725748 is a `hidden beast` number, since 6 + 6 + 72 + 574 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66725749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16336 + ... + 20007.

It is an arithmetic number, because the mean of its divisors is an integer number (3816120).

Almost surely, 2^66725748 is an apocalyptic number.

66725748 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

66725748 is an abundant number, since it is smaller than the sum of its proper divisors (116448012).

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

66725748 is a wasteful number, since it uses less digits than its factorization.

66725748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36373 (or 36365 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The square root of 66725748 is about 8168.5829860509. The cubic root of 66725748 is about 405.5998792059.

The spelling of 66725748 in words is "sixty-six million, seven hundred twenty-five thousand, seven hundred forty-eight".