85030769 has 4 divisors (see below), whose sum is σ = 85049460. Its totient is φ = 85012080.

The previous prime is 85030739. The next prime is 85030801. The reversal of 85030769 is 96703058.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21270544 + 63760225 = 4612^2 + 7985^2 .

It is a cyclic number.

It is not a de Polignac number, because 85030769 - 2⁸ = 85030513 is a prime.

It is a super-2 number, since 2×85030769² = 14460463353462722, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85030739) 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, 2399 + ... + 13259.

It is an arithmetic number, because the mean of its divisors is an integer number (21262365).

Almost surely, 2^85030769 is an apocalyptic number.

It is an amenable number.

85030769 is a deficient number, since it is larger than the sum of its proper divisors (18691).

85030769 is a wasteful number, since it uses less digits than its factorization.

85030769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18690.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 85030769 is about 9221.2129896234. The cubic root of 85030769 is about 439.7360141693.

The spelling of 85030769 in words is "eighty-five million, thirty thousand, seven hundred sixty-nine".