677120665015 has 8 divisors (see below), whose sum is σ = 815157484128. Its totient is φ = 539954741280.

The previous prime is 677120664991. The next prime is 677120665043. The reversal of 677120665015 is 510566021776.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 677120665015 - 2²¹ = 677118567863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 217722132 + ... + 217725241.

It is an arithmetic number, because the mean of its divisors is an integer number (101894685516).

Almost surely, 2^677120665015 is an apocalyptic number.

677120665015 is a deficient number, since it is larger than the sum of its proper divisors (138036819113).

677120665015 is a wasteful number, since it uses less digits than its factorization.

677120665015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435447689.

The product of its (nonzero) digits is 529200, while the sum is 46.

The spelling of 677120665015 in words is "six hundred seventy-seven billion, one hundred twenty million, six hundred sixty-five thousand, fifteen".