646573092 has 48 divisors (see below), whose sum is σ = 1647765504. Its totient is φ = 195700000.

The previous prime is 646573061. The next prime is 646573093. The reversal of 646573092 is 290375646.

It is not an unprimeable number, because it can be changed into a prime (646573093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133717 + ... + 138467.

It is an arithmetic number, because the mean of its divisors is an integer number (34328448).

Almost surely, 2^646573092 is an apocalyptic number.

It is an amenable number.

646573092 is an abundant number, since it is smaller than the sum of its proper divisors (1001192412).

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

646573092 is a wasteful number, since it uses less digits than its factorization.

646573092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5800 (or 5798 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 42.

The square root of 646573092 is about 25427.8015565640. The cubic root of 646573092 is about 864.7141033406.

The spelling of 646573092 in words is "six hundred forty-six million, five hundred seventy-three thousand, ninety-two".