1066999970 has 8 divisors (see below), whose sum is σ = 1920599964. Its totient is φ = 426799984.

The previous prime is 1066999963. The next prime is 1066999981. The reversal of 1066999970 is 799996601.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1011303601 + 55696369 = 31801^2 + 7463^2 .

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

It is a super-2 number, since 2×1066999970² = 2276977871960001800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53349989 + ... + 53350008.

Almost surely, 2^1066999970 is an apocalyptic number.

1066999970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1066999970 is a deficient number, since it is larger than the sum of its proper divisors (853599994).

1066999970 is a wasteful number, since it uses less digits than its factorization.

1066999970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106700004.

The product of its (nonzero) digits is 1653372, while the sum is 56.

The square root of 1066999970 is about 32664.9654829146. The cubic root of 1066999970 is about 1021.8523210621.

The spelling of 1066999970 in words is "one billion, sixty-six million, nine hundred ninety-nine thousand, nine hundred seventy".