70187437 has 2 divisors, whose sum is σ = 70187438. Its totient is φ = 70187436.

The previous prime is 70187419. The next prime is 70187473. The reversal of 70187437 is 73478107.

Together with next prime (70187473) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69705801 + 481636 = 8349^2 + 694^2 .

It is an emirp because it is prime and its reverse (73478107) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70187437 - 2¹¹ = 70185389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 70187396 and 70187405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70187417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35093718 + 35093719.

It is an arithmetic number, because the mean of its divisors is an integer number (35093719).

Almost surely, 2^70187437 is an apocalyptic number.

It is an amenable number.

70187437 is a deficient number, since it is larger than the sum of its proper divisors (1).

70187437 is an equidigital number, since it uses as much as digits as its factorization.

70187437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32928, while the sum is 37.

The square root of 70187437 is about 8377.7942801193. The cubic root of 70187437 is about 412.4960504060.

The spelling of 70187437 in words is "seventy million, one hundred eighty-seven thousand, four hundred thirty-seven".