66872696 has 32 divisors (see below), whose sum is σ = 144834480. Its totient is φ = 28608000.

The previous prime is 66872693. The next prime is 66872717. The reversal of 66872696 is 69627866.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66872693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20855 + ... + 23846.

Almost surely, 2^66872696 is an apocalyptic number.

It is an amenable number.

66872696 is an abundant number, since it is smaller than the sum of its proper divisors (77961784).

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

66872696 is a wasteful number, since it uses less digits than its factorization.

66872696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44735 (or 44731 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 50.

The square root of 66872696 is about 8177.5727450143. The cubic root of 66872696 is about 405.8974074865.

The spelling of 66872696 in words is "sixty-six million, eight hundred seventy-two thousand, six hundred ninety-six".