7145665396 has 6 divisors (see below), whose sum is σ = 12504914450. Its totient is φ = 3572832696.

The previous prime is 7145665393. The next prime is 7145665409. The reversal of 7145665396 is 6935665417.

It can be written as a sum of positive squares in only one way, i.e., 4210192996 + 2935472400 = 64886^2 + 54180^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7145665393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 893208171 + ... + 893208178.

Almost surely, 2^7145665396 is an apocalyptic number.

It is an amenable number.

7145665396 is a deficient number, since it is larger than the sum of its proper divisors (5359249054).

7145665396 is a wasteful number, since it uses less digits than its factorization.

7145665396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1786416353 (or 1786416351 counting only the distinct ones).

The product of its digits is 4082400, while the sum is 52.

The square root of 7145665396 is about 84532.0376898605. The cubic root of 7145665396 is about 1926.1091395096.

The spelling of 7145665396 in words is "seven billion, one hundred forty-five million, six hundred sixty-five thousand, three hundred ninety-six".