70506687037 has 4 divisors (see below), whose sum is σ = 70757600796. Its totient is φ = 70255773280.

The previous prime is 70506686993. The next prime is 70506687047. The reversal of 70506687037 is 73078660507.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73078660507 = 1069 ⋅68361703.

It can be written as a sum of positive squares in 2 ways, for example, as 20876204196 + 49630482841 = 144486^2 + 222779^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70506687037 is a prime.

It is a Smith number, since the sum of its digits (49) 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 not an unprimeable number, because it can be changed into a prime (70506687047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125456458 + ... + 125457019.

It is an arithmetic number, because the mean of its divisors is an integer number (17689400199).

Almost surely, 2^70506687037 is an apocalyptic number.

It is an amenable number.

70506687037 is a deficient number, since it is larger than the sum of its proper divisors (250913759).

70506687037 is a wasteful number, since it uses less digits than its factorization.

70506687037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250913758.

The product of its (nonzero) digits is 1481760, while the sum is 49.

The spelling of 70506687037 in words is "seventy billion, five hundred six million, six hundred eighty-seven thousand, thirty-seven".