66087696 has 20 divisors (see below), whose sum is σ = 170726672. Its totient is φ = 22029216.

The previous prime is 66087683. The next prime is 66087713. The reversal of 66087696 is 69678066.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 1376827 = 66087696 / (6 + 6 + 0 + 8 + 7 + 6 + 9 + 6).

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, 688366 + ... + 688461.

Almost surely, 2^66087696 is an apocalyptic number.

It is an amenable number.

66087696 is an abundant number, since it is smaller than the sum of its proper divisors (104638976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66087696 is a wasteful number, since it uses less digits than its factorization.

66087696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376838 (or 1376832 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 48.

The square root of 66087696 is about 8129.4339286324. The cubic root of 66087696 is about 404.3029130387.

The spelling of 66087696 in words is "sixty-six million, eighty-seven thousand, six hundred ninety-six".