673021577 has 4 divisors (see below), whose sum is σ = 675640596. Its totient is φ = 670402560.

The previous prime is 673021571. The next prime is 673021579. The reversal of 673021577 is 775120376.

673021577 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 356039161 + 316982416 = 18869^2 + 17804^2 .

It is a cyclic number.

It is not a de Polignac number, because 673021577 - 2¹⁸ = 672759433 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 673021577.

It is not an unprimeable number, because it can be changed into a prime (673021571) 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, 1309124 + ... + 1309637.

It is an arithmetic number, because the mean of its divisors is an integer number (168910149).

Almost surely, 2^673021577 is an apocalyptic number.

It is an amenable number.

673021577 is a deficient number, since it is larger than the sum of its proper divisors (2619019).

673021577 is a wasteful number, since it uses less digits than its factorization.

673021577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2619018.

The product of its (nonzero) digits is 61740, while the sum is 38.

The square root of 673021577 is about 25942.6594049261. The cubic root of 673021577 is about 876.3474540488.

The spelling of 673021577 in words is "six hundred seventy-three million, twenty-one thousand, five hundred seventy-seven".