66703508 has 12 divisors (see below), whose sum is σ = 116937492. Its totient is φ = 33292800.

The previous prime is 66703487. The next prime is 66703513. The reversal of 66703508 is 80530766.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 66552964 + 150544 = 8158^2 + 388^2 .

It is a zygodrome in base 3.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12143 + ... + 16758.

It is an arithmetic number, because the mean of its divisors is an integer number (9744791).

Almost surely, 2^66703508 is an apocalyptic number.

It is an amenable number.

66703508 is a deficient number, since it is larger than the sum of its proper divisors (50233984).

66703508 is a wasteful number, since it uses less digits than its factorization.

66703508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29482 (or 29480 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 66703508 is about 8167.2215593799. The cubic root of 66703508 is about 405.5548114274.

The spelling of 66703508 in words is "sixty-six million, seven hundred three thousand, five hundred eight".