66070785 has 16 divisors (see below), whose sum is σ = 115323840. Its totient is φ = 32034240.

The previous prime is 66070769. The next prime is 66070793. The reversal of 66070785 is 58707066.

It is not a de Polignac number, because 66070785 - 2⁴ = 66070769 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200050 + ... + 200379.

It is an arithmetic number, because the mean of its divisors is an integer number (7207740).

Almost surely, 2^66070785 is an apocalyptic number.

It is an amenable number.

66070785 is a deficient number, since it is larger than the sum of its proper divisors (49253055).

66070785 is a wasteful number, since it uses less digits than its factorization.

66070785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400448.

The product of its (nonzero) digits is 70560, while the sum is 39.

The square root of 66070785 is about 8128.3937527657. The cubic root of 66070785 is about 404.2684247741.

The spelling of 66070785 in words is "sixty-six million, seventy thousand, seven hundred eighty-five".