647369578090 has 16 divisors (see below), whose sum is σ = 1165280175072. Its totient is φ = 258944512464.

The previous prime is 647369578087. The next prime is 647369578091. The reversal of 647369578090 is 90875963746.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (647369578091) 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 7 ways as a sum of consecutive naturals, for example, 500617 + ... + 1243123.

It is an arithmetic number, because the mean of its divisors is an integer number (72830010942).

Almost surely, 2^647369578090 is an apocalyptic number.

647369578090 is a deficient number, since it is larger than the sum of its proper divisors (517910596982).

647369578090 is a wasteful number, since it uses less digits than its factorization.

647369578090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829701.

The product of its (nonzero) digits is 68584320, while the sum is 64.

The spelling of 647369578090 in words is "six hundred forty-seven billion, three hundred sixty-nine million, five hundred seventy-eight thousand, ninety".