70188445 has 8 divisors (see below), whose sum is σ = 86502744. Its totient is φ = 54633024.

The previous prime is 70188421. The next prime is 70188457. The reversal of 70188445 is 54488107.

It can be written as a sum of positive squares in 4 ways, for example, as 40475044 + 29713401 = 6362^2 + 5451^2 .

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 70188445 - 2⁹ = 70187933 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189514 + ... + 189883.

It is an arithmetic number, because the mean of its divisors is an integer number (10812843).

Almost surely, 2^70188445 is an apocalyptic number.

It is an amenable number.

70188445 is a deficient number, since it is larger than the sum of its proper divisors (16314299).

70188445 is a wasteful number, since it uses less digits than its factorization.

70188445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379439.

The product of its (nonzero) digits is 35840, while the sum is 37.

The square root of 70188445 is about 8377.8544389360. The cubic root of 70188445 is about 412.4980250900.

The spelling of 70188445 in words is "seventy million, one hundred eighty-eight thousand, four hundred forty-five".