677646332405 has 16 divisors (see below), whose sum is σ = 984010809600. Its totient is φ = 437338136832.

The previous prime is 677646332399. The next prime is 677646332449. The reversal of 677646332405 is 504233646776.

It is a cyclic number.

It is not a de Polignac number, because 677646332405 - 2¹⁴ = 677646316021 is a prime.

It is a congruent 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, 569450105 + ... + 569451294.

It is an arithmetic number, because the mean of its divisors is an integer number (61500675600).

Almost surely, 2^677646332405 is an apocalyptic number.

It is an amenable number.

677646332405 is a deficient number, since it is larger than the sum of its proper divisors (306364477195).

677646332405 is a wasteful number, since it uses less digits than its factorization.

677646332405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1138901428.

The product of its (nonzero) digits is 15240960, while the sum is 53.

The spelling of 677646332405 in words is "six hundred seventy-seven billion, six hundred forty-six million, three hundred thirty-two thousand, four hundred five".