647693457323 has 32 divisors (see below), whose sum is σ = 761945260032. Its totient is φ = 544423255200.

The previous prime is 647693457241. The next prime is 647693457377. The reversal of 647693457323 is 323754396746.

It is not a de Polignac number, because 647693457323 - 2⁸ = 647693457067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (647693457623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6910190 + ... + 7003292.

It is an arithmetic number, because the mean of its divisors is an integer number (23810789376).

Almost surely, 2^647693457323 is an apocalyptic number.

647693457323 is a deficient number, since it is larger than the sum of its proper divisors (114251802709).

647693457323 is a wasteful number, since it uses less digits than its factorization.

647693457323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94055.

The product of its digits is 68584320, while the sum is 59.

The spelling of 647693457323 in words is "six hundred forty-seven billion, six hundred ninety-three million, four hundred fifty-seven thousand, three hundred twenty-three".