70012639 has 2 divisors, whose sum is σ = 70012640. Its totient is φ = 70012638.

The previous prime is 70012627. The next prime is 70012673. The reversal of 70012639 is 93621007.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70012639 - 2¹³ = 70004447 is a prime.

It is equal to p_4118743 and since 70012639 and 4118743 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70012619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35006319 + 35006320.

It is an arithmetic number, because the mean of its divisors is an integer number (35006320).

Almost surely, 2^70012639 is an apocalyptic number.

70012639 is a deficient number, since it is larger than the sum of its proper divisors (1).

70012639 is an equidigital number, since it uses as much as digits as its factorization.

70012639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 70012639 is about 8367.3555559687. The cubic root of 70012639 is about 412.1533327381.

The spelling of 70012639 in words is "seventy million, twelve thousand, six hundred thirty-nine".