1085720067 has 18 divisors (see below), whose sum is σ = 1624216412. Its totient is φ = 698849424.

The previous prime is 1085720063. The next prime is 1085720071. The reversal of 1085720067 is 7600275801.

It is an interprime number because it is at equal distance from previous prime (1085720063) and next prime (1085720071).

It is not a de Polignac number, because 1085720067 - 2² = 1085720063 is a prime.

It is a Duffinian 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 17 ways as a sum of consecutive naturals, for example, 64153 + ... + 79290.

Almost surely, 2^1085720067 is an apocalyptic number.

1085720067 is a deficient number, since it is larger than the sum of its proper divisors (538496345).

1085720067 is a wasteful number, since it uses less digits than its factorization.

1085720067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143507 (or 143475 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 1085720067 is about 32950.2665694832. The cubic root of 1085720067 is about 1027.7937086373.

Adding to 1085720067 its reverse (7600275801), we get a palindrome (8685995868).

The spelling of 1085720067 in words is "one billion, eighty-five million, seven hundred twenty thousand, sixty-seven".