676731906905 has 16 divisors (see below), whose sum is σ = 815901684624. Its totient is φ = 538838522880.

The previous prime is 676731906883. The next prime is 676731906919. The reversal of 676731906905 is 509609137676.

It can be written as a sum of positive squares in 8 ways, for example, as 66438155536 + 610293751369 = 257756^2 + 781213^2 .

It is not a de Polignac number, because 676731906905 - 2²⁰ = 676730858329 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2719925 + ... + 2958285.

It is an arithmetic number, because the mean of its divisors is an integer number (50993855289).

Almost surely, 2^676731906905 is an apocalyptic number.

It is an amenable number.

676731906905 is a deficient number, since it is larger than the sum of its proper divisors (139169777719).

676731906905 is a wasteful number, since it uses less digits than its factorization.

676731906905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241036.

The product of its (nonzero) digits is 12859560, while the sum is 59.

The spelling of 676731906905 in words is "six hundred seventy-six billion, seven hundred thirty-one million, nine hundred six thousand, nine hundred five".