70857445 has 8 divisors (see below), whose sum is σ = 90030744. Its totient is φ = 53351424.

The previous prime is 70857401. The next prime is 70857473. The reversal of 70857445 is 54475807.

It can be written as a sum of positive squares in 4 ways, for example, as 7845601 + 63011844 = 2801^2 + 7938^2 .

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 70857445 - 2⁷ = 70857317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70857398 and 70857407.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 416724 + ... + 416893.

It is an arithmetic number, because the mean of its divisors is an integer number (11253843).

Almost surely, 2^70857445 is an apocalyptic number.

It is an amenable number.

70857445 is a deficient number, since it is larger than the sum of its proper divisors (19173299).

70857445 is a wasteful number, since it uses less digits than its factorization.

70857445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833639.

The product of its (nonzero) digits is 156800, while the sum is 40.

The square root of 70857445 is about 8417.6864398717. The cubic root of 70857445 is about 413.8044557953.

The spelling of 70857445 in words is "seventy million, eight hundred fifty-seven thousand, four hundred forty-five".