1061084821 has 4 divisors (see below), whose sum is σ = 1061672544. Its totient is φ = 1060497100.

The previous prime is 1061084743. The next prime is 1061084839. The reversal of 1061084821 is 1284801601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1061084821 - 2⁷ = 1061084693 is a prime.

It is a super-2 number, since 2×1061084821² = 2251801994713204082, 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 (1061084881) 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, 291145 + ... + 294766.

It is an arithmetic number, because the mean of its divisors is an integer number (265418136).

Almost surely, 2^1061084821 is an apocalyptic number.

It is an amenable number.

1061084821 is a deficient number, since it is larger than the sum of its proper divisors (587723).

1061084821 is an equidigital number, since it uses as much as digits as its factorization.

1061084821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587722.

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 1061084821 is about 32574.2969379233. The cubic root of 1061084821 is about 1019.9605332032.

The spelling of 1061084821 in words is "one billion, sixty-one million, eighty-four thousand, eight hundred twenty-one".