70070857 has 8 divisors (see below), whose sum is σ = 73941120. Its totient is φ = 66269280.

The previous prime is 70070849. The next prime is 70070863. The reversal of 70070857 is 75807007.

It is a happy number.

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 70070857 - 2³ = 70070849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70070887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15069 + ... + 19162.

It is an arithmetic number, because the mean of its divisors is an integer number (9242640).

Almost surely, 2^70070857 is an apocalyptic number.

It is an amenable number.

70070857 is a deficient number, since it is larger than the sum of its proper divisors (3870263).

70070857 is a wasteful number, since it uses less digits than its factorization.

70070857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34343.

The product of its (nonzero) digits is 13720, while the sum is 34.

The square root of 70070857 is about 8370.8337099718. The cubic root of 70070857 is about 412.2675411406.

The spelling of 70070857 in words is "seventy million, seventy thousand, eight hundred fifty-seven".