677720473 has 8 divisors (see below), whose sum is σ = 685225800. Its totient is φ = 670225920.

The previous prime is 677720437. The next prime is 677720479. The reversal of 677720473 is 374027776.

It can be written as a sum of positive squares in 4 ways, for example, as 164788569 + 512931904 = 12837^2 + 22648^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 677720473 - 2²⁹ = 140849561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (677720479) 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 7 ways as a sum of consecutive naturals, for example, 245883 + ... + 248623.

It is an arithmetic number, because the mean of its divisors is an integer number (85653225).

Almost surely, 2^677720473 is an apocalyptic number.

It is an amenable number.

677720473 is a deficient number, since it is larger than the sum of its proper divisors (7505327).

677720473 is a wasteful number, since it uses less digits than its factorization.

677720473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5387.

The product of its (nonzero) digits is 345744, while the sum is 43.

The square root of 677720473 is about 26033.0649943490. The cubic root of 677720473 is about 878.3822175331.

The spelling of 677720473 in words is "six hundred seventy-seven million, seven hundred twenty thousand, four hundred seventy-three".