673766637 has 4 divisors (see below), whose sum is σ = 898355520. Its totient is φ = 449177756.

The previous prime is 673766629. The next prime is 673766659. The reversal of 673766637 is 736667376.

673766637 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 673766637 - 2³ = 673766629 is a prime.

It is a super-2 number, since 2×673766637² = 907922962268579538, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 673766637.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673766537) 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, 112294437 + ... + 112294442.

It is an arithmetic number, because the mean of its divisors is an integer number (224588880).

Almost surely, 2^673766637 is an apocalyptic number.

It is an amenable number.

673766637 is a deficient number, since it is larger than the sum of its proper divisors (224588883).

673766637 is a wasteful number, since it uses less digits than its factorization.

673766637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224588882.

The product of its digits is 4000752, while the sum is 51.

The square root of 673766637 is about 25957.0151789454. The cubic root of 673766637 is about 876.6707179008.

The spelling of 673766637 in words is "six hundred seventy-three million, seven hundred sixty-six thousand, six hundred thirty-seven".