70230905 has 4 divisors (see below), whose sum is σ = 84277092. Its totient is φ = 56184720.

The previous prime is 70230889. The next prime is 70230913. The reversal of 70230905 is 50903207.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11002489 + 59228416 = 3317^2 + 7696^2 .

It is not a de Polignac number, because 70230905 - 2⁴ = 70230889 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7023086 + ... + 7023095.

It is an arithmetic number, because the mean of its divisors is an integer number (21069273).

Almost surely, 2^70230905 is an apocalyptic number.

It is an amenable number.

70230905 is a deficient number, since it is larger than the sum of its proper divisors (14046187).

70230905 is a wasteful number, since it uses less digits than its factorization.

70230905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14046186.

The product of its (nonzero) digits is 1890, while the sum is 26.

The square root of 70230905 is about 8380.3881175039. The cubic root of 70230905 is about 412.5811875704.

The spelling of 70230905 in words is "seventy million, two hundred thirty thousand, nine hundred five".