70078221 has 12 divisors (see below), whose sum is σ = 101647260. Its totient is φ = 46523520.

The previous prime is 70078163. The next prime is 70078231. The reversal of 70078221 is 12287007.

It can be written as a sum of positive squares in 2 ways, for example, as 59444100 + 10634121 = 7710^2 + 3261^2 .

It is not a de Polignac number, because 70078221 - 2⁶ = 70078157 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70078231) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 13986 + ... + 18323.

It is an arithmetic number, because the mean of its divisors is an integer number (8470605).

Almost surely, 2^70078221 is an apocalyptic number.

It is an amenable number.

70078221 is a deficient number, since it is larger than the sum of its proper divisors (31569039).

70078221 is a wasteful number, since it uses less digits than its factorization.

70078221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32556 (or 32553 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 70078221 is about 8371.2735590231. The cubic root of 70078221 is about 412.2819828641.

The spelling of 70078221 in words is "seventy million, seventy-eight thousand, two hundred twenty-one".