66072396 has 24 divisors (see below), whose sum is σ = 166028464. Its totient is φ = 20329920.

The previous prime is 66072371. The next prime is 66072401. The reversal of 66072396 is 69327066.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211615 + ... + 211926.

Almost surely, 2^66072396 is an apocalyptic number.

It is an amenable number.

66072396 is an abundant number, since it is smaller than the sum of its proper divisors (99956068).

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

66072396 is a wasteful number, since it uses less digits than its factorization.

66072396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423561 (or 423559 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 39.

The square root of 66072396 is about 8128.4928492310. The cubic root of 66072396 is about 404.2717104984.

The spelling of 66072396 in words is "sixty-six million, seventy-two thousand, three hundred ninety-six".