20060664 has 64 divisors (see below), whose sum is σ = 54583200. Its totient is φ = 6107136.

The previous prime is 20060653. The next prime is 20060717. The reversal of 20060664 is 46606002.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34972 + ... + 35540.

Almost surely, 2^20060664 is an apocalyptic number.

20060664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20060664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27291600).

20060664 is an abundant number, since it is smaller than the sum of its proper divisors (34522536).

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

20060664 is a wasteful number, since it uses less digits than its factorization.

20060664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704 (or 700 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 20060664 is about 4478.9132610489. The cubic root of 20060664 is about 271.7159303604.

Adding to 20060664 its reverse (46606002), we get a palindrome (66666666).

The spelling of 20060664 in words is "twenty million, sixty thousand, six hundred sixty-four".