70056665 has 8 divisors (see below), whose sum is σ = 96077760. Its totient is φ = 48038832.

The previous prime is 70056661. The next prime is 70056703. The reversal of 70056665 is 56665007.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 70056665 - 2² = 70056661 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 2001619 = 70056665 / (7 + 0 + 0 + 5 + 6 + 6 + 6 + 5).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (70056661) 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, 1000775 + ... + 1000844.

It is an arithmetic number, because the mean of its divisors is an integer number (12009720).

Almost surely, 2^70056665 is an apocalyptic number.

It is an amenable number.

70056665 is a deficient number, since it is larger than the sum of its proper divisors (26021095).

70056665 is a wasteful number, since it uses less digits than its factorization.

70056665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2001631.

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 70056665 is about 8369.9859617564. The cubic root of 70056665 is about 412.2397060023.

The spelling of 70056665 in words is "seventy million, fifty-six thousand, six hundred sixty-five".