66488480 has 24 divisors (see below), whose sum is σ = 157079412. Its totient is φ = 26595328.

The previous prime is 66488453. The next prime is 66488489. The reversal of 66488480 is 8488466.

It can be written as a sum of positive squares in 2 ways, for example, as 65480464 + 1008016 = 8092^2 + 1004^2 .

It is not an unprimeable number, because it can be changed into a prime (66488489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207617 + ... + 207936.

Almost surely, 2^66488480 is an apocalyptic number.

It is an amenable number.

66488480 is an abundant number, since it is smaller than the sum of its proper divisors (90590932).

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

66488480 is a wasteful number, since it uses less digits than its factorization.

66488480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415568 (or 415560 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 44.

The square root of 66488480 is about 8154.0468480381. The cubic root of 66488480 is about 405.1185549381.

The spelling of 66488480 in words is "sixty-six million, four hundred eighty-eight thousand, four hundred eighty".