673567820 has 12 divisors (see below), whose sum is σ = 1414492464. Its totient is φ = 269427120.

The previous prime is 673567819. The next prime is 673567823. The reversal of 673567820 is 28765376.

It is not an unprimeable number, because it can be changed into a prime (673567823) 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, 16839176 + ... + 16839215.

It is an arithmetic number, because the mean of its divisors is an integer number (117874372).

Almost surely, 2^673567820 is an apocalyptic number.

It is an amenable number.

673567820 is an abundant number, since it is smaller than the sum of its proper divisors (740924644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

673567820 is a wasteful number, since it uses less digits than its factorization.

673567820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33678400 (or 33678398 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 44.

The square root of 673567820 is about 25953.1851609778. The cubic root of 673567820 is about 876.5844792442.

The spelling of 673567820 in words is "six hundred seventy-three million, five hundred sixty-seven thousand, eight hundred twenty".