70477009 has 2 divisors, whose sum is σ = 70477010. Its totient is φ = 70477008.

The previous prime is 70477007. The next prime is 70477013. The reversal of 70477009 is 90077407.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68310225 + 2166784 = 8265^2 + 1472^2 .

It is a cyclic number.

It is not a de Polignac number, because 70477009 - 2¹ = 70477007 is a prime.

Together with 70477007, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (70477007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35238504 + 35238505.

It is an arithmetic number, because the mean of its divisors is an integer number (35238505).

Almost surely, 2^70477009 is an apocalyptic number.

It is an amenable number.

70477009 is a deficient number, since it is larger than the sum of its proper divisors (1).

70477009 is an equidigital number, since it uses as much as digits as its factorization.

70477009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12348, while the sum is 34.

The square root of 70477009 is about 8395.0586061087. The cubic root of 70477009 is about 413.0625497642.

The spelling of 70477009 in words is "seventy million, four hundred seventy-seven thousand, nine".