64220630 has 16 divisors (see below), whose sum is σ = 117779184. Its totient is φ = 25203360.

The previous prime is 64220599. The next prime is 64220633. The reversal of 64220630 is 3602246.

It is a junction number, because it is equal to n+sod(n) for n = 64220596 and 64220605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64220633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60056 + ... + 61115.

It is an arithmetic number, because the mean of its divisors is an integer number (7361199).

Almost surely, 2^64220630 is an apocalyptic number.

64220630 is a deficient number, since it is larger than the sum of its proper divisors (53558554).

64220630 is a wasteful number, since it uses less digits than its factorization.

64220630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121231.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 64220630 is about 8013.7775112615. Note that the first 3 decimals coincide. The cubic root of 64220630 is about 400.4591186569.

Adding to 64220630 its reverse (3602246), we get a palindrome (67822876).

The spelling of 64220630 in words is "sixty-four million, two hundred twenty thousand, six hundred thirty".