66153424 has 10 divisors (see below), whose sum is σ = 128172290. Its totient is φ = 33076704.

The previous prime is 66153419. The next prime is 66153427. The reversal of 66153424 is 42435166.

It can be written as a sum of positive squares in only one way, i.e., 65934400 + 219024 = 8120^2 + 468^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66153427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2067279 + ... + 2067310.

It is an arithmetic number, because the mean of its divisors is an integer number (12817229).

Almost surely, 2^66153424 is an apocalyptic number.

It is an amenable number.

66153424 is a deficient number, since it is larger than the sum of its proper divisors (62018866).

66153424 is a wasteful number, since it uses less digits than its factorization.

66153424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4134597 (or 4134591 counting only the distinct ones).

The product of its digits is 17280, while the sum is 31.

The square root of 66153424 is about 8133.4755178829. The cubic root of 66153424 is about 404.4369027652.

The spelling of 66153424 in words is "sixty-six million, one hundred fifty-three thousand, four hundred twenty-four".