70013437 has 8 divisors (see below), whose sum is σ = 75683160. Its totient is φ = 64384320.

The previous prime is 70013413. The next prime is 70013441. The reversal of 70013437 is 73431007.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8375236 + 61638201 = 2894^2 + 7851^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-70013437 is a prime.

It is a super-3 number, since 3×70013437³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70013467) 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, 6514 + ... + 13507.

It is an arithmetic number, because the mean of its divisors is an integer number (9460395).

Almost surely, 2^70013437 is an apocalyptic number.

It is an amenable number.

70013437 is a deficient number, since it is larger than the sum of its proper divisors (5669723).

70013437 is a wasteful number, since it uses less digits than its factorization.

70013437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20303.

The product of its (nonzero) digits is 1764, while the sum is 25.

The square root of 70013437 is about 8367.4032411496. The cubic root of 70013437 is about 412.1548986321.

The spelling of 70013437 in words is "seventy million, thirteen thousand, four hundred thirty-seven".