1066602220 has 24 divisors (see below), whose sum is σ = 2242044000. Its totient is φ = 426225792.

The previous prime is 1066602211. The next prime is 1066602247. The reversal of 1066602220 is 222066601.

It is a super-2 number, since 2×1066602220² = 2275280591417856800, which contains 22 as substring.

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, 4440 + ... + 46399.

It is an arithmetic number, because the mean of its divisors is an integer number (93418500).

Almost surely, 2^1066602220 is an apocalyptic number.

1066602220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1066602220 is an abundant number, since it is smaller than the sum of its proper divisors (1175441780).

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

1066602220 is a wasteful number, since it uses less digits than its factorization.

1066602220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51897 (or 51895 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1066602220 is about 32658.8765881498. The cubic root of 1066602220 is about 1021.7253319067.

Adding to 1066602220 its reverse (222066601), we get a palindrome (1288668821).

The spelling of 1066602220 in words is "one billion, sixty-six million, six hundred two thousand, two hundred twenty".