66512424 has 32 divisors (see below), whose sum is σ = 181398240. Its totient is φ = 20155200.

The previous prime is 66512393. The next prime is 66512431. The reversal of 66512424 is 42421566.

It is a junction number, because it is equal to n+sod(n) for n = 66512391 and 66512400.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125707 + ... + 126234.

It is an arithmetic number, because the mean of its divisors is an integer number (5668695).

Almost surely, 2^66512424 is an apocalyptic number.

It is an amenable number.

66512424 is an abundant number, since it is smaller than the sum of its proper divisors (114885816).

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

66512424 is a wasteful number, since it uses less digits than its factorization.

66512424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251961 (or 251957 counting only the distinct ones).

The product of its digits is 11520, while the sum is 30.

The square root of 66512424 is about 8155.5149438892. The cubic root of 66512424 is about 405.1671798753.

The spelling of 66512424 in words is "sixty-six million, five hundred twelve thousand, four hundred twenty-four".