66601436 has 12 divisors (see below), whose sum is σ = 127148280. Its totient is φ = 30273360.

The previous prime is 66601421. The next prime is 66601463. The reversal of 66601436 is 63410666.

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, 756791 + ... + 756878.

It is an arithmetic number, because the mean of its divisors is an integer number (10595690).

Almost surely, 2^66601436 is an apocalyptic number.

It is an amenable number.

66601436 is a deficient number, since it is larger than the sum of its proper divisors (60546844).

66601436 is a wasteful number, since it uses less digits than its factorization.

66601436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1513684 (or 1513682 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 66601436 is about 8160.9702854501. The cubic root of 66601436 is about 405.3478411844.

The spelling of 66601436 in words is "sixty-six million, six hundred one thousand, four hundred thirty-six".