66120424 has 32 divisors (see below), whose sum is σ = 126561600. Its totient is φ = 32376960.

The previous prime is 66120419. The next prime is 66120433. The reversal of 66120424 is 42402166.

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, 150397 + ... + 150835.

It is an arithmetic number, because the mean of its divisors is an integer number (3955050).

Almost surely, 2^66120424 is an apocalyptic number.

It is an amenable number.

66120424 is a deficient number, since it is larger than the sum of its proper divisors (60441176).

66120424 is a wasteful number, since it uses less digits than its factorization.

66120424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793 (or 789 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 66120424 is about 8131.4466117660. The cubic root of 66120424 is about 404.3696417586.

The spelling of 66120424 in words is "sixty-six million, one hundred twenty thousand, four hundred twenty-four".