70065778 has 8 divisors (see below), whose sum is σ = 106365168. Its totient is φ = 34610724.

The previous prime is 70065757. The next prime is 70065799. The reversal of 70065778 is 87756007.

It is an interprime number because it is at equal distance from previous prime (70065757) and next prime (70065799).

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

It is a self number, because there is not a number n which added to its sum of digits gives 70065778.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210876 + ... + 211207.

It is an arithmetic number, because the mean of its divisors is an integer number (13295646).

Almost surely, 2^70065778 is an apocalyptic number.

70065778 is a deficient number, since it is larger than the sum of its proper divisors (36299390).

70065778 is a wasteful number, since it uses less digits than its factorization.

70065778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422168.

The product of its (nonzero) digits is 82320, while the sum is 40.

The square root of 70065778 is about 8370.5303296745. The cubic root of 70065778 is about 412.2575799978.

The spelling of 70065778 in words is "seventy million, sixty-five thousand, seven hundred seventy-eight".