70389173 has 2 divisors, whose sum is σ = 70389174. Its totient is φ = 70389172.

The previous prime is 70389139. The next prime is 70389191. The reversal of 70389173 is 37198307.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35259844 + 35129329 = 5938^2 + 5927^2 .

It is a cyclic number.

It is not a de Polignac number, because 70389173 - 2⁸ = 70388917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70389113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35194586 + 35194587.

It is an arithmetic number, because the mean of its divisors is an integer number (35194587).

Almost surely, 2^70389173 is an apocalyptic number.

It is an amenable number.

70389173 is a deficient number, since it is larger than the sum of its proper divisors (1).

70389173 is an equidigital number, since it uses as much as digits as its factorization.

70389173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 70389173 is about 8389.8255643368. The cubic root of 70389173 is about 412.8908774897.

The spelling of 70389173 in words is "seventy million, three hundred eighty-nine thousand, one hundred seventy-three".