677581709 has 16 divisors (see below), whose sum is σ = 782917632. Its totient is φ = 574417008.

The previous prime is 677581687. The next prime is 677581721. The reversal of 677581709 is 907185776.

It is a cyclic number.

It is not a de Polignac number, because 677581709 - 2⁸ = 677581453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677581739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 253112 + ... + 255774.

It is an arithmetic number, because the mean of its divisors is an integer number (48932352).

Almost surely, 2^677581709 is an apocalyptic number.

It is an amenable number.

677581709 is a deficient number, since it is larger than the sum of its proper divisors (105335923).

677581709 is a wasteful number, since it uses less digits than its factorization.

677581709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3056.

The product of its (nonzero) digits is 740880, while the sum is 50.

The square root of 677581709 is about 26030.3997088020. The cubic root of 677581709 is about 878.3222635380.

The spelling of 677581709 in words is "six hundred seventy-seven million, five hundred eighty-one thousand, seven hundred nine".