66928484 has 36 divisors (see below), whose sum is σ = 135926784. Its totient is φ = 28246608.

The previous prime is 66928481. The next prime is 66928487. The reversal of 66928484 is 48482966.

It is an interprime number because it is at equal distance from previous prime (66928481) and next prime (66928487).

66928484 is a modest number, since divided by 8484 gives 6692 as remainder.

It is not an unprimeable number, because it can be changed into a prime (66928481) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 174557 + ... + 174939.

It is an arithmetic number, because the mean of its divisors is an integer number (3775744).

Almost surely, 2^66928484 is an apocalyptic number.

It is an amenable number.

66928484 is an abundant number, since it is smaller than the sum of its proper divisors (68998300).

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

66928484 is a wasteful number, since it uses less digits than its factorization.

66928484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552 (or 471 counting only the distinct ones).

The product of its digits is 663552, while the sum is 47.

The square root of 66928484 is about 8180.9830705118. The cubic root of 66928484 is about 406.0102483116.

The spelling of 66928484 in words is "sixty-six million, nine hundred twenty-eight thousand, four hundred eighty-four".