1345664008 has 16 divisors (see below), whose sum is σ = 2717206380. Its totient is φ = 621075648.

The previous prime is 1345663981. The next prime is 1345664009. The reversal of 1345664008 is 8004665431.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1343808964 + 1855044 = 36658^2 + 1362^2 .

It is not an unprimeable number, because it can be changed into a prime (1345664009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6469435 + ... + 6469642.

Almost surely, 2^1345664008 is an apocalyptic number.

It is an amenable number.

1345664008 is an abundant number, since it is smaller than the sum of its proper divisors (1371542372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1345664008 is a wasteful number, since it uses less digits than its factorization.

1345664008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12939096 (or 12939092 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 1345664008 is about 36683.2933090801. The cubic root of 1345664008 is about 1104.0249263608.

The spelling of 1345664008 in words is "one billion, three hundred forty-five million, six hundred sixty-four thousand, eight".