1066559901 has 8 divisors (see below), whose sum is σ = 1551359904. Its totient is φ = 646399920.

The previous prime is 1066559873. The next prime is 1066559909. The reversal of 1066559901 is 1099556601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1066559901 - 2¹⁰ = 1066558877 is a prime.

It is a super-2 number, since 2×1066559901² = 2275100044842259602, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066559909) 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, 16159966 + ... + 16160031.

It is an arithmetic number, because the mean of its divisors is an integer number (193919988).

Almost surely, 2^1066559901 is an apocalyptic number.

1066559901 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1066559901 is a deficient number, since it is larger than the sum of its proper divisors (484800003).

1066559901 is a wasteful number, since it uses less digits than its factorization.

1066559901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32320011.

The product of its (nonzero) digits is 72900, while the sum is 42.

The square root of 1066559901 is about 32658.2286874227. The cubic root of 1066559901 is about 1021.7118189134.

The spelling of 1066559901 in words is "one billion, sixty-six million, five hundred fifty-nine thousand, nine hundred one".