1061999 has 4 divisors (see below), whose sum is σ = 1064064. Its totient is φ = 1059936.

The previous prime is 1061993. The next prime is 1062001. The reversal of 1061999 is 9991601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9991601 = 179 ⋅55819.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1061999 is a prime.

It is a super-2 number, since 2×1061999² = 2255683752002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 434 + ... + 1520.

It is an arithmetic number, because the mean of its divisors is an integer number (266016).

2^1061999 is an apocalyptic number.

1061999 is a deficient number, since it is larger than the sum of its proper divisors (2065).

1061999 is an equidigital number, since it uses as much as digits as its factorization.

1061999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2064.

The product of its (nonzero) digits is 4374, while the sum is 35.

The square root of 1061999 is about 1030.5333570535. The cubic root of 1061999 is about 102.0253365228.

The spelling of 1061999 in words is "one million, sixty-one thousand, nine hundred ninety-nine".