66703544 has 16 divisors (see below), whose sum is σ = 125155800. Its totient is φ = 33328672.

The previous prime is 66703541. The next prime is 66703573. The reversal of 66703544 is 44530766.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66703541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21227 + ... + 24165.

Almost surely, 2^66703544 is an apocalyptic number.

It is an amenable number.

66703544 is a deficient number, since it is larger than the sum of its proper divisors (58452256).

66703544 is a wasteful number, since it uses less digits than its factorization.

66703544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5782 (or 5778 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 35.

The square root of 66703544 is about 8167.2237633115. The cubic root of 66703544 is about 405.5548843869.

The spelling of 66703544 in words is "sixty-six million, seven hundred three thousand, five hundred forty-four".