6574939397 has 16 divisors (see below), whose sum is σ = 7507310832. Its totient is φ = 5704473600.

The previous prime is 6574939391. The next prime is 6574939411. The reversal of 6574939397 is 7939394756.

It is a Cunningham number, because it is equal to 81086²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 59382436 + 6515556961 = 7706^2 + 80719^2 .

It is a cyclic number.

It is not a de Polignac number, because 6574939397 - 2⁶ = 6574939333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6574939391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147647 + ... + 186947.

It is an arithmetic number, because the mean of its divisors is an integer number (469206927).

Almost surely, 2^6574939397 is an apocalyptic number.

It is an amenable number.

6574939397 is a deficient number, since it is larger than the sum of its proper divisors (932371435).

6574939397 is a wasteful number, since it uses less digits than its factorization.

6574939397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40088.

The product of its digits is 38578680, while the sum is 62.

The square root of 6574939397 is about 81086.0000061663. Note that the first 5 decimals coincide. The cubic root of 6574939397 is about 1873.4002969067.

The spelling of 6574939397 in words is "six billion, five hundred seventy-four million, nine hundred thirty-nine thousand, three hundred ninety-seven".