646211130 has 64 divisors (see below), whose sum is σ = 1573084800. Its totient is φ = 169875200.

The previous prime is 646211119. The next prime is 646211141. The reversal of 646211130 is 31112646.

It is an interprime number because it is at equal distance from previous prime (646211119) and next prime (646211141).

It is a self number, because there is not a number n which added to its sum of digits gives 646211130.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1269316 + ... + 1269824.

It is an arithmetic number, because the mean of its divisors is an integer number (24579450).

Almost surely, 2^646211130 is an apocalyptic number.

646211130 is an abundant number, since it is smaller than the sum of its proper divisors (926873670).

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

646211130 is a wasteful number, since it uses less digits than its factorization.

646211130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 646211130 is about 25420.6831143461. The cubic root of 646211130 is about 864.5527129402.

Adding to 646211130 its reverse (31112646), we get a palindrome (677323776).

The spelling of 646211130 in words is "six hundred forty-six million, two hundred eleven thousand, one hundred thirty".