64219630 has 16 divisors (see below), whose sum is σ = 119581920. Its totient is φ = 24801952.

The previous prime is 64219619. The next prime is 64219643. The reversal of 64219630 is 3691246.

It is a junction number, because it is equal to n+sod(n) for n = 64219592 and 64219601.

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, 110434 + ... + 111013.

It is an arithmetic number, because the mean of its divisors is an integer number (7473870).

Almost surely, 2^64219630 is an apocalyptic number.

64219630 is a deficient number, since it is larger than the sum of its proper divisors (55362290).

64219630 is a wasteful number, since it uses less digits than its factorization.

64219630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221483.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 64219630 is about 8013.7151184703. The cubic root of 64219630 is about 400.4570400870.

The spelling of 64219630 in words is "sixty-four million, two hundred nineteen thousand, six hundred thirty".