66470448 has 120 divisors (see below), whose sum is σ = 195041088. Its totient is φ = 19344000.

The previous prime is 66470429. The next prime is 66470477. The reversal of 66470448 is 84407466.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 507343 + ... + 507473.

Almost surely, 2^66470448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66470448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97520544).

66470448 is an abundant number, since it is smaller than the sum of its proper divisors (128570640).

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

66470448 is a wasteful number, since it uses less digits than its factorization.

66470448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 39.

The square root of 66470448 is about 8152.9410644258. The cubic root of 66470448 is about 405.0819282509.

The spelling of 66470448 in words is "sixty-six million, four hundred seventy thousand, four hundred forty-eight".