820080970 has 8 divisors (see below), whose sum is σ = 1476145764. Its totient is φ = 328032384.

The previous prime is 820080967. The next prime is 820080979. The reversal of 820080970 is 79080028.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 767677849 + 52403121 = 27707^2 + 7239^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×820080970² = 1345065594712281800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (820080979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41004039 + ... + 41004058.

Almost surely, 2^820080970 is an apocalyptic number.

820080970 is a deficient number, since it is larger than the sum of its proper divisors (656064794).

820080970 is a wasteful number, since it uses less digits than its factorization.

820080970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82008104.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 820080970 is about 28637.0558891797. The cubic root of 820080970 is about 936.0209690739.

The spelling of 820080970 in words is "eight hundred twenty million, eighty thousand, nine hundred seventy".