1066421513 has 8 divisors (see below), whose sum is σ = 1083264480. Its totient is φ = 1049605920.

The previous prime is 1066421497. The next prime is 1066421527. The reversal of 1066421513 is 3151246601.

It is a happy number.

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

It is not a de Polignac number, because 1066421513 - 2⁴ = 1066421497 is a prime.

It is a super-2 number, since 2×1066421513² = 2274509686778418338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1066421593) 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, 80333 + ... + 92661.

It is an arithmetic number, because the mean of its divisors is an integer number (135408060).

Almost surely, 2^1066421513 is an apocalyptic number.

It is an amenable number.

1066421513 is a deficient number, since it is larger than the sum of its proper divisors (16842967).

1066421513 is a wasteful number, since it uses less digits than its factorization.

1066421513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13687.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1066421513 is about 32656.1098877377. The cubic root of 1066421513 is about 1021.6676273742.

The spelling of 1066421513 in words is "one billion, sixty-six million, four hundred twenty-one thousand, five hundred thirteen".