1085720069 has 8 divisors (see below), whose sum is σ = 1267223808. Its totient is φ = 910816560.

The previous prime is 1085720063. The next prime is 1085720071. The reversal of 1085720069 is 9600275801.

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

It is a cyclic number.

It is not a de Polignac number, because 1085720069 - 2²⁸ = 817284613 is a prime.

It is a super-2 number, since 2×1085720069² = 2357576136458729522, 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 (1085720063) 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, 1649702 + ... + 1650359.

It is an arithmetic number, because the mean of its divisors is an integer number (158402976).

Almost surely, 2^1085720069 is an apocalyptic number.

It is an amenable number.

1085720069 is a deficient number, since it is larger than the sum of its proper divisors (181503739).

1085720069 is an equidigital number, since it uses as much as digits as its factorization.

1085720069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3300115.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 1085720069 is about 32950.2665998319. The cubic root of 1085720069 is about 1027.7937092684.

The spelling of 1085720069 in words is "one billion, eighty-five million, seven hundred twenty thousand, sixty-nine".