646583852 has 6 divisors (see below), whose sum is σ = 1131521748. Its totient is φ = 323291924.

The previous prime is 646583837. The next prime is 646583857. The reversal of 646583852 is 258385646.

It is a junction number, because it is equal to n+sod(n) for n = 646583797 and 646583806.

It is not an unprimeable number, because it can be changed into a prime (646583857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80822978 + ... + 80822985.

It is an arithmetic number, because the mean of its divisors is an integer number (188586958).

Almost surely, 2^646583852 is an apocalyptic number.

It is an amenable number.

646583852 is a deficient number, since it is larger than the sum of its proper divisors (484937896).

646583852 is a wasteful number, since it uses less digits than its factorization.

646583852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161645967 (or 161645965 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 47.

The square root of 646583852 is about 25428.0131351232. The cubic root of 646583852 is about 864.7189000513.

The spelling of 646583852 in words is "six hundred forty-six million, five hundred eighty-three thousand, eight hundred fifty-two".