70312637 has 2 divisors, whose sum is σ = 70312638. Its totient is φ = 70312636.

The previous prime is 70312631. The next prime is 70312657. The reversal of 70312637 is 73621307.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66031876 + 4280761 = 8126^2 + 2069^2 .

It is an emirp because it is prime and its reverse (73621307) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70312637 - 2¹⁰ = 70311613 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70312631) by changing a digit.

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 as a sum of consecutive naturals, namely, 35156318 + 35156319.

It is an arithmetic number, because the mean of its divisors is an integer number (35156319).

Almost surely, 2^70312637 is an apocalyptic number.

It is an amenable number.

70312637 is a deficient number, since it is larger than the sum of its proper divisors (1).

70312637 is an equidigital number, since it uses as much as digits as its factorization.

70312637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292, while the sum is 29.

The square root of 70312637 is about 8385.2630847219. The cubic root of 70312637 is about 412.7411741792.

It can be divided in two parts, 70312 and 637, that multiplied together give a palindrome (44788744).

The spelling of 70312637 in words is "seventy million, three hundred twelve thousand, six hundred thirty-seven".