70066385 has 4 divisors (see below), whose sum is σ = 84079668. Its totient is φ = 56053104.

The previous prime is 70066379. The next prime is 70066387. The reversal of 70066385 is 58366007.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20729809 + 49336576 = 4553^2 + 7024^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70066385 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70066387) 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, 7006634 + ... + 7006643.

It is an arithmetic number, because the mean of its divisors is an integer number (21019917).

Almost surely, 2^70066385 is an apocalyptic number.

It is an amenable number.

70066385 is a deficient number, since it is larger than the sum of its proper divisors (14013283).

70066385 is a wasteful number, since it uses less digits than its factorization.

70066385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14013282.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 70066385 is about 8370.5665877526. The cubic root of 70066385 is about 412.2587704964.

The spelling of 70066385 in words is "seventy million, sixty-six thousand, three hundred eighty-five".