70005818 has 4 divisors (see below), whose sum is σ = 105008730. Its totient is φ = 35002908.

The previous prime is 70005799. The next prime is 70005839. The reversal of 70005818 is 81850007.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 69939769 + 66049 = 8363^2 + 257^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17501453 + ... + 17501456.

Almost surely, 2^70005818 is an apocalyptic number.

70005818 is a deficient number, since it is larger than the sum of its proper divisors (35002912).

70005818 is a wasteful number, since it uses less digits than its factorization.

70005818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35002911.

The product of its (nonzero) digits is 2240, while the sum is 29.

The square root of 70005818 is about 8366.9479501190. The cubic root of 70005818 is about 412.1399475873.

The spelling of 70005818 in words is "seventy million, five thousand, eight hundred eighteen".