1066320450 has 288 divisors, whose sum is σ = 3294747456. Its totient is φ = 254741760.

The previous prime is 1066320439. The next prime is 1066320473. The reversal of 1066320450 is 540236601.

1066320450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1066320450² = 2274078604176405000, which contains 22 as substring.

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 polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 6791772 + ... + 6791928.

Almost surely, 2^1066320450 is an apocalyptic number.

1066320450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1066320450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1647373728).

1066320450 is an abundant number, since it is smaller than the sum of its proper divisors (2228427006).

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

1066320450 is a wasteful number, since it uses less digits than its factorization.

1066320450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240 (or 223 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 1066320450 is about 32654.5624683596. The cubic root of 1066320450 is about 1021.6353524385.

It can be divided in two parts, 10663 and 20450, that added together give a palindrome (31113).

The spelling of 1066320450 in words is "one billion, sixty-six million, three hundred twenty thousand, four hundred fifty".