786430081 has 4 divisors (see below), whose sum is σ = 832690692. Its totient is φ = 740169472.

The previous prime is 786430049. The next prime is 786430093. The reversal of 786430081 is 180034687.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 180034687 = 7 ⋅25719241.

It can be written as a sum of positive squares in 2 ways, for example, as 482241600 + 304188481 = 21960^2 + 17441^2 .

It is a cyclic number.

It is not a de Polignac number, because 786430081 - 2⁵ = 786430049 is a prime.

It is a super-2 number, since 2×786430081² = 1236944544603333122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 786430081.

It is not an unprimeable number, because it can be changed into a prime (786430181) 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, 23130280 + ... + 23130313.

It is an arithmetic number, because the mean of its divisors is an integer number (208172673).

Almost surely, 2^786430081 is an apocalyptic number.

It is an amenable number.

786430081 is a deficient number, since it is larger than the sum of its proper divisors (46260611).

786430081 is a wasteful number, since it uses less digits than its factorization.

786430081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46260610.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 786430081 is about 28043.3607294133. The cubic root of 786430081 is about 923.0389742157.

The spelling of 786430081 in words is "seven hundred eighty-six million, four hundred thirty thousand, eighty-one".