70445570 has 16 divisors (see below), whose sum is σ = 136556280. Its totient is φ = 26010624.

The previous prime is 70445563. The next prime is 70445623. The reversal of 70445570 is 7554407.

It can be written as a sum of positive squares in 4 ways, for example, as 29626249 + 40819321 = 5443^2 + 6389^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270815 + ... + 271074.

Almost surely, 2^70445570 is an apocalyptic number.

70445570 is a deficient number, since it is larger than the sum of its proper divisors (66110710).

70445570 is a wasteful number, since it uses less digits than its factorization.

70445570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541909.

The product of its (nonzero) digits is 19600, while the sum is 32.

The square root of 70445570 is about 8393.1859266908. The cubic root of 70445570 is about 413.0011197784.

Adding to 70445570 its reverse (7554407), we get a palindrome (77999977).

The spelling of 70445570 in words is "seventy million, four hundred forty-five thousand, five hundred seventy".