64220430 has 16 divisors (see below), whose sum is σ = 154129104. Its totient is φ = 17125440.

The previous prime is 64220417. The next prime is 64220447. The reversal of 64220430 is 3402246.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 64220397 and 64220406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1070311 + ... + 1070370.

It is an arithmetic number, because the mean of its divisors is an integer number (9633069).

Almost surely, 2^64220430 is an apocalyptic number.

64220430 is an abundant number, since it is smaller than the sum of its proper divisors (89908674).

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

64220430 is a wasteful number, since it uses less digits than its factorization.

64220430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2140691.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 64220430 is about 8013.7650327421. The cubic root of 64220430 is about 400.4587029446.

Adding to 64220430 its reverse (3402246), we get a palindrome (67622676).

The spelling of 64220430 in words is "sixty-four million, two hundred twenty thousand, four hundred thirty".