20076660 has 132 divisors (see below), whose sum is σ = 66961188. Its totient is φ = 5038848.

The previous prime is 20076611. The next prime is 20076691. The reversal of 20076660 is 6667002.

It can be written as a sum of positive squares in 2 ways, for example, as 11573604 + 8503056 = 3402^2 + 2916^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 43 ways as a sum of consecutive naturals, for example, 1180972 + ... + 1180988.

Almost surely, 2^20076660 is an apocalyptic number.

20076660 is a gapful number since it is divisible by the number (20) 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 20076660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33480594).

20076660 is an abundant number, since it is smaller than the sum of its proper divisors (46884528).

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

20076660 is an equidigital number, since it uses as much as digits as its factorization.

20076660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56 (or 27 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 20076660 is about 4480.6986062443. The cubic root of 20076660 is about 271.7881315812.

It can be divided in two parts, 20076 and 660, that added together give a 4-th power (20736 = 12⁴).

The spelling of 20076660 in words is "twenty million, seventy-six thousand, six hundred sixty".