1066642975 has 6 divisors (see below), whose sum is σ = 1322637320. Its totient is φ = 853314360.

The previous prime is 1066642937. The next prime is 1066642981. The reversal of 1066642975 is 5792466601.

It is not a de Polignac number, because 1066642975 - 2⁷ = 1066642847 is a prime.

It is a super-2 number, since 2×1066642975² = 2275454472233701250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21332835 + ... + 21332884.

Almost surely, 2^1066642975 is an apocalyptic number.

1066642975 is a deficient number, since it is larger than the sum of its proper divisors (255994345).

1066642975 is an equidigital number, since it uses as much as digits as its factorization.

1066642975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42665729 (or 42665724 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 46.

The square root of 1066642975 is about 32659.5005320045. The cubic root of 1066642975 is about 1021.7383451572.

The spelling of 1066642975 in words is "one billion, sixty-six million, six hundred forty-two thousand, nine hundred seventy-five".