70437745 has 12 divisors (see below), whose sum is σ = 98325684. Its totient is φ = 48300000.

The previous prime is 70437739. The next prime is 70437803. The reversal of 70437745 is 54773407.

It can be written as a sum of positive squares in 2 ways, for example, as 18352656 + 52085089 = 4284^2 + 7217^2 .

It is not a de Polignac number, because 70437745 - 2¹¹ = 70435697 is a prime.

It is a super-2 number, since 2×70437745² = 9922951841370050, which contains 22 as substring.

It is a Duffinian 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 11 ways as a sum of consecutive naturals, for example, 143506 + ... + 143995.

It is an arithmetic number, because the mean of its divisors is an integer number (8193807).

Almost surely, 2^70437745 is an apocalyptic number.

It is an amenable number.

70437745 is a deficient number, since it is larger than the sum of its proper divisors (27887939).

70437745 is a wasteful number, since it uses less digits than its factorization.

70437745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287520 (or 287513 counting only the distinct ones).

The product of its (nonzero) digits is 82320, while the sum is 37.

The square root of 70437745 is about 8392.7197617936. The cubic root of 70437745 is about 412.9858273409.

The spelling of 70437745 in words is "seventy million, four hundred thirty-seven thousand, seven hundred forty-five".