66607470 has 48 divisors (see below), whose sum is σ = 174376800. Its totient is φ = 17639232.

The previous prime is 66607451. The next prime is 66607487. The reversal of 66607470 is 7470666.

It is a congruent number.

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, 10927 + ... + 15893.

It is an arithmetic number, because the mean of its divisors is an integer number (3632850).

Almost surely, 2^66607470 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66607470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87188400).

66607470 is an abundant number, since it is smaller than the sum of its proper divisors (107769330).

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

66607470 is a wasteful number, since it uses less digits than its factorization.

66607470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5129 (or 5126 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 66607470 is about 8161.3399635109. The cubic root of 66607470 is about 405.3600821368.

The spelling of 66607470 in words is "sixty-six million, six hundred seven thousand, four hundred seventy".