677742973 has 4 divisors (see below), whose sum is σ = 682690140. Its totient is φ = 672795808.

The previous prime is 677742943. The next prime is 677742991. The reversal of 677742973 is 379247776.

677742973 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 554932249 + 122810724 = 23557^2 + 11082^2 .

It is a cyclic number.

It is not a de Polignac number, because 677742973 - 2¹³ = 677734781 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 677742973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677742943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2473378 + ... + 2473651.

It is an arithmetic number, because the mean of its divisors is an integer number (170672535).

Almost surely, 2^677742973 is an apocalyptic number.

It is an amenable number.

677742973 is a deficient number, since it is larger than the sum of its proper divisors (4947167).

677742973 is a wasteful number, since it uses less digits than its factorization.

677742973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4947166.

The product of its digits is 3111696, while the sum is 52.

The square root of 677742973 is about 26033.4971335009. The cubic root of 677742973 is about 878.3919380507.

The spelling of 677742973 in words is "six hundred seventy-seven million, seven hundred forty-two thousand, nine hundred seventy-three".