70078817 has 8 divisors (see below), whose sum is σ = 72468480. Its totient is φ = 67697280.

The previous prime is 70078793. The next prime is 70078823. The reversal of 70078817 is 71887007.

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 70078817 - 2¹⁰ = 70077793 is a prime.

It is a super-2 number, since 2×70078817² = 9822081184238978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70078117) 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, 19184 + ... + 22542.

It is an arithmetic number, because the mean of its divisors is an integer number (9058560).

Almost surely, 2^70078817 is an apocalyptic number.

It is an amenable number.

70078817 is a deficient number, since it is larger than the sum of its proper divisors (2389663).

70078817 is a wasteful number, since it uses less digits than its factorization.

70078817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4063.

The product of its (nonzero) digits is 21952, while the sum is 38.

The square root of 70078817 is about 8371.3091568762. The cubic root of 70078817 is about 412.2831516503.

The spelling of 70078817 in words is "seventy million, seventy-eight thousand, eight hundred seventeen".