70437685 has 4 divisors (see below), whose sum is σ = 84525228. Its totient is φ = 56350144.

The previous prime is 70437667. The next prime is 70437691. The reversal of 70437685 is 58673407.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34939921 + 35497764 = 5911^2 + 5958^2 .

It is a cyclic number.

It is not a de Polignac number, because 70437685 - 2¹⁹ = 69913397 is a prime.

It is a super-2 number, since 2×70437685² = 9922934936318450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 7043764 + ... + 7043773.

It is an arithmetic number, because the mean of its divisors is an integer number (21131307).

Almost surely, 2^70437685 is an apocalyptic number.

It is an amenable number.

70437685 is a deficient number, since it is larger than the sum of its proper divisors (14087543).

70437685 is a wasteful number, since it uses less digits than its factorization.

70437685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14087542.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 70437685 is about 8392.7161872662. The cubic root of 70437685 is about 412.9857100782.

The spelling of 70437685 in words is "seventy million, four hundred thirty-seven thousand, six hundred eighty-five".