70645885 has 8 divisors (see below), whose sum is σ = 87698520. Its totient is φ = 54567744.

The previous prime is 70645879. The next prime is 70645889. The reversal of 70645885 is 58854607.

It can be written as a sum of positive squares in 4 ways, for example, as 30880249 + 39765636 = 5557^2 + 6306^2 .

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 70645885 - 2³ = 70645877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70645889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243462 + ... + 243751.

It is an arithmetic number, because the mean of its divisors is an integer number (10962315).

Almost surely, 2^70645885 is an apocalyptic number.

It is an amenable number.

70645885 is a deficient number, since it is larger than the sum of its proper divisors (17052635).

70645885 is a wasteful number, since it uses less digits than its factorization.

70645885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487247.

The product of its (nonzero) digits is 268800, while the sum is 43.

The square root of 70645885 is about 8405.1106476952. The cubic root of 70645885 is about 413.3922114501.

The spelling of 70645885 in words is "seventy million, six hundred forty-five thousand, eight hundred eighty-five".