8020664308 has 6 divisors (see below), whose sum is σ = 14036162546. Its totient is φ = 4010332152.

The previous prime is 8020664303. The next prime is 8020664341. The reversal of 8020664308 is 8034660208.

It can be written as a sum of positive squares in only one way, i.e., 7717973904 + 302690404 = 87852^2 + 17398^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8020664303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1002583035 + ... + 1002583042.

Almost surely, 2^8020664308 is an apocalyptic number.

It is an amenable number.

8020664308 is a deficient number, since it is larger than the sum of its proper divisors (6015498238).

8020664308 is a wasteful number, since it uses less digits than its factorization.

8020664308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2005166081 (or 2005166079 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 8020664308 is about 89558.1615934584. The cubic root of 8020664308 is about 2001.7205451045.

The spelling of 8020664308 in words is "eight billion, twenty million, six hundred sixty-four thousand, three hundred eight".