66150072 has 24 divisors (see below), whose sum is σ = 179156640. Its totient is φ = 22050000.

The previous prime is 66150053. The next prime is 66150079. The reversal of 66150072 is 27005166.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66150079) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 459304 + ... + 459447.

It is an arithmetic number, because the mean of its divisors is an integer number (7464860).

Almost surely, 2^66150072 is an apocalyptic number.

It is an amenable number.

66150072 is an abundant number, since it is smaller than the sum of its proper divisors (113006568).

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

66150072 is a wasteful number, since it uses less digits than its factorization.

66150072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918763 (or 918756 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 66150072 is about 8133.2694533011. The cubic root of 66150072 is about 404.4300716983.

The spelling of 66150072 in words is "sixty-six million, one hundred fifty thousand, seventy-two".