70385897 has 2 divisors, whose sum is σ = 70385898. Its totient is φ = 70385896.

The previous prime is 70385891. The next prime is 70385927. The reversal of 70385897 is 79858307.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62663056 + 7722841 = 7916^2 + 2779^2 .

It is a cyclic number.

It is not a de Polignac number, because 70385897 - 2⁴ = 70385881 is a prime.

It is not a weakly prime, because it can be changed into another prime (70385891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35192948 + 35192949.

It is an arithmetic number, because the mean of its divisors is an integer number (35192949).

Almost surely, 2^70385897 is an apocalyptic number.

It is an amenable number.

70385897 is a deficient number, since it is larger than the sum of its proper divisors (1).

70385897 is an equidigital number, since it uses as much as digits as its factorization.

70385897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 423360, while the sum is 47.

The square root of 70385897 is about 8389.6303255865. The cubic root of 70385897 is about 412.8844719047.

The spelling of 70385897 in words is "seventy million, three hundred eighty-five thousand, eight hundred ninety-seven".