66153404 has 6 divisors (see below), whose sum is σ = 115768464. Its totient is φ = 33076700.

The previous prime is 66153401. The next prime is 66153413. The reversal of 66153404 is 40435166.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66153401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8269172 + ... + 8269179.

It is an arithmetic number, because the mean of its divisors is an integer number (19294744).

Almost surely, 2^66153404 is an apocalyptic number.

It is an amenable number.

66153404 is a deficient number, since it is larger than the sum of its proper divisors (49615060).

66153404 is a wasteful number, since it uses less digits than its factorization.

66153404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16538355 (or 16538353 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 66153404 is about 8133.4742883961. The cubic root of 66153404 is about 404.4368620077.

The spelling of 66153404 in words is "sixty-six million, one hundred fifty-three thousand, four hundred four".