66072696 has 16 divisors (see below), whose sum is σ = 165181800. Its totient is φ = 22024224.

The previous prime is 66072661. The next prime is 66072697. The reversal of 66072696 is 69627066.

It is a super-3 number, since 3×66072696³ (a number of 24 digits) contains 333 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66072697) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1376491 + ... + 1376538.

Almost surely, 2^66072696 is an apocalyptic number.

It is an amenable number.

66072696 is an abundant number, since it is smaller than the sum of its proper divisors (99109104).

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

66072696 is a wasteful number, since it uses less digits than its factorization.

66072696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2753038 (or 2753034 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 42.

The square root of 66072696 is about 8128.5113028155. The cubic root of 66072696 is about 404.2723223592.

The spelling of 66072696 in words is "sixty-six million, seventy-two thousand, six hundred ninety-six".