6733640397 has 32 divisors (see below), whose sum is σ = 10078176384. Its totient is φ = 3963168000.

The previous prime is 6733640393. The next prime is 6733640423. The reversal of 6733640397 is 7930463376.

It is not a de Polignac number, because 6733640397 - 2² = 6733640393 is a prime.

It is a super-2 number, since 2×6733640397² = 90683825992220635218, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6733640393) 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 31 ways as a sum of consecutive naturals, for example, 675147 + ... + 685047.

It is an arithmetic number, because the mean of its divisors is an integer number (314943012).

Almost surely, 2^6733640397 is an apocalyptic number.

It is an amenable number.

6733640397 is a deficient number, since it is larger than the sum of its proper divisors (3344535987).

6733640397 is a wasteful number, since it uses less digits than its factorization.

6733640397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10509.

The product of its (nonzero) digits is 1714608, while the sum is 48.

The square root of 6733640397 is about 82058.7618539300. The cubic root of 6733640397 is about 1888.3535390981.

The spelling of 6733640397 in words is "six billion, seven hundred thirty-three million, six hundred forty thousand, three hundred ninety-seven".