64020630 has 16 divisors (see below), whose sum is σ = 153649584. Its totient is φ = 17072160.

The previous prime is 64020599. The next prime is 64020631. The reversal of 64020630 is 3602046.

It is a junction number, because it is equal to n+sod(n) for n = 64020597 and 64020606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64020631) 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, 1066981 + ... + 1067040.

It is an arithmetic number, because the mean of its divisors is an integer number (9603099).

Almost surely, 2^64020630 is an apocalyptic number.

64020630 is an abundant number, since it is smaller than the sum of its proper divisors (89628954).

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

64020630 is a wasteful number, since it uses less digits than its factorization.

64020630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2134031.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 64020630 is about 8001.2892711113. The cubic root of 64020630 is about 400.0429745495.

Adding to 64020630 its reverse (3602046), we get a palindrome (67622676).

The spelling of 64020630 in words is "sixty-four million, twenty thousand, six hundred thirty".