70005989 has 2 divisors, whose sum is σ = 70005990. Its totient is φ = 70005988.

The previous prime is 70005977. The next prime is 70006003. The reversal of 70005989 is 98950007.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41383489 + 28622500 = 6433^2 + 5350^2 .

It is a cyclic number.

It is not a de Polignac number, because 70005989 - 2⁴ = 70005973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70005589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35002994 + 35002995.

It is an arithmetic number, because the mean of its divisors is an integer number (35002995).

Almost surely, 2^70005989 is an apocalyptic number.

It is an amenable number.

70005989 is a deficient number, since it is larger than the sum of its proper divisors (1).

70005989 is an equidigital number, since it uses as much as digits as its factorization.

70005989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 38.

The square root of 70005989 is about 8366.9581688927. The cubic root of 70005989 is about 412.1402831588.

The spelling of 70005989 in words is "seventy million, five thousand, nine hundred eighty-nine".