610221630 has 32 divisors (see below), whose sum is σ = 1550682144. Its totient is φ = 153153536.

The previous prime is 610221629. The next prime is 610221637. The reversal of 610221630 is 36122016.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 610221597 and 610221606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (610221637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 597747 + ... + 598766.

It is an arithmetic number, because the mean of its divisors is an integer number (48458817).

Almost surely, 2^610221630 is an apocalyptic number.

610221630 is an abundant number, since it is smaller than the sum of its proper divisors (940460514).

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

610221630 is a wasteful number, since it uses less digits than its factorization.

610221630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196540.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 610221630 is about 24702.6644311904. The cubic root of 610221630 is about 848.1953083053.

Adding to 610221630 its reverse (36122016), we get a palindrome (646343646).

The spelling of 610221630 in words is "six hundred ten million, two hundred twenty-one thousand, six hundred thirty".