66070444 has 24 divisors (see below), whose sum is σ = 131620608. Its totient is φ = 28725840.

The previous prime is 66070441. The next prime is 66070447. The reversal of 66070444 is 44407066.

It is an interprime number because it is at equal distance from previous prime (66070441) and next prime (66070447).

It is not an unprimeable number, because it can be changed into a prime (66070441) 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, 31632 + ... + 33655.

It is an arithmetic number, because the mean of its divisors is an integer number (5484192).

Almost surely, 2^66070444 is an apocalyptic number.

It is an amenable number.

66070444 is a deficient number, since it is larger than the sum of its proper divisors (65550164).

66070444 is a wasteful number, since it uses less digits than its factorization.

66070444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65325 (or 65323 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 66070444 is about 8128.3727768847. The cubic root of 66070444 is about 404.2677292788.

The spelling of 66070444 in words is "sixty-six million, seventy thousand, four hundred forty-four".