805870034 has 4 divisors (see below), whose sum is σ = 1208805054. Its totient is φ = 402935016.

The previous prime is 805870033. The next prime is 805870061. The reversal of 805870034 is 430078508.

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., 433264225 + 372605809 = 20815^2 + 19303^2 .

It is a super-2 number, since 2×805870034² = 1298853023398322312, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 805869976 and 805870003.

It is not an unprimeable number, because it can be changed into a prime (805870033) by changing a digit.

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, 201467507 + ... + 201467510.

Almost surely, 2^805870034 is an apocalyptic number.

805870034 is a deficient number, since it is larger than the sum of its proper divisors (402935020).

805870034 is a wasteful number, since it uses less digits than its factorization.

805870034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402935019.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 805870034 is about 28387.8501123280. The cubic root of 805870034 is about 930.5827595844.

The spelling of 805870034 in words is "eight hundred five million, eight hundred seventy thousand, thirty-four".