66700436 has 12 divisors (see below), whose sum is σ = 127337280. Its totient is φ = 30318360.

The previous prime is 66700429. The next prime is 66700441. The reversal of 66700436 is 63400766.

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, 757916 + ... + 758003.

It is an arithmetic number, because the mean of its divisors is an integer number (10611440).

Almost surely, 2^66700436 is an apocalyptic number.

It is an amenable number.

66700436 is a deficient number, since it is larger than the sum of its proper divisors (60636844).

66700436 is a wasteful number, since it uses less digits than its factorization.

66700436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1515934 (or 1515932 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 66700436 is about 8167.0334883604. The cubic root of 66700436 is about 405.5485854504.

The spelling of 66700436 in words is "sixty-six million, seven hundred thousand, four hundred thirty-six".