70122005 has 8 divisors (see below), whose sum is σ = 84239232. Its totient is φ = 56035728.

The previous prime is 70121983. The next prime is 70122007. The reversal of 70122005 is 50022107.

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 70122005 - 2⁶ = 70121941 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70122007) 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, 2417 + ... + 12086.

It is an arithmetic number, because the mean of its divisors is an integer number (10529904).

Almost surely, 2^70122005 is an apocalyptic number.

70122005 is the 4835-th octagonal number.

It is an amenable number.

70122005 is a deficient number, since it is larger than the sum of its proper divisors (14117227).

70122005 is a wasteful number, since it uses less digits than its factorization.

70122005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15475.

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 70122005 is about 8373.8882844232. Note that the first 3 decimals coincide. The cubic root of 70122005 is about 412.3678278716.

The spelling of 70122005 in words is "seventy million, one hundred twenty-two thousand, five".