673620481 has 4 divisors (see below), whose sum is σ = 702908352. Its totient is φ = 644332612.

The previous prime is 673620419. The next prime is 673620487. The reversal of 673620481 is 184026376.

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 673620481 - 2¹¹ = 673618433 is a prime.

It is a super-2 number, since 2×673620481² = 907529104845342722, which contains 22 as substring.

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 673620481.

It is not an unprimeable number, because it can be changed into a prime (673620487) 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, 14643901 + ... + 14643946.

It is an arithmetic number, because the mean of its divisors is an integer number (175727088).

Almost surely, 2^673620481 is an apocalyptic number.

It is an amenable number.

673620481 is a deficient number, since it is larger than the sum of its proper divisors (29287871).

673620481 is a wasteful number, since it uses less digits than its factorization.

673620481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29287870.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 673620481 is about 25954.1996794353. The cubic root of 673620481 is about 876.6073230772.

It can be divided in two parts, 6736204 and 81, that added together give a triangular number (6736285 = T₃₆₇₀).

The spelling of 673620481 in words is "six hundred seventy-three million, six hundred twenty thousand, four hundred eighty-one".