70438087 has 2 divisors, whose sum is σ = 70438088. Its totient is φ = 70438086.

The previous prime is 70438061. The next prime is 70438091. The reversal of 70438087 is 78083407.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70438087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70438037) 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, 35219043 + 35219044.

It is an arithmetic number, because the mean of its divisors is an integer number (35219044).

Almost surely, 2^70438087 is an apocalyptic number.

70438087 is a deficient number, since it is larger than the sum of its proper divisors (1).

70438087 is an equidigital number, since it uses as much as digits as its factorization.

70438087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 70438087 is about 8392.7401365704. The cubic root of 70438087 is about 412.9864957369.

The spelling of 70438087 in words is "seventy million, four hundred thirty-eight thousand, eighty-seven".