66605948 has 24 divisors (see below), whose sum is σ = 119402640. Its totient is φ = 32497920.

The previous prime is 66605947. The next prime is 66605951. The reversal of 66605948 is 84950666.

It is a junction number, because it is equal to n+sod(n) for n = 66605899 and 66605908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66605947) 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, 43988 + ... + 45476.

It is an arithmetic number, because the mean of its divisors is an integer number (4975110).

Almost surely, 2^66605948 is an apocalyptic number.

It is an amenable number.

66605948 is a deficient number, since it is larger than the sum of its proper divisors (52796692).

66605948 is a wasteful number, since it uses less digits than its factorization.

66605948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1757 (or 1755 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 66605948 is about 8161.2467184861. The cubic root of 66605948 is about 405.3569945815.

The spelling of 66605948 in words is "sixty-six million, six hundred five thousand, nine hundred forty-eight".