780041085 has 32 divisors (see below), whose sum is σ = 1262426880. Its totient is φ = 411264000.

The previous prime is 780041081. The next prime is 780041137. The reversal of 780041085 is 580140087.

It is a happy number.

It is not a de Polignac number, because 780041085 - 2² = 780041081 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780041081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 545151 + ... + 546579.

It is an arithmetic number, because the mean of its divisors is an integer number (39450840).

Almost surely, 2^780041085 is an apocalyptic number.

It is an amenable number.

780041085 is a deficient number, since it is larger than the sum of its proper divisors (482385795).

780041085 is a wasteful number, since it uses less digits than its factorization.

780041085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1829.

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 780041085 is about 27929.2156173424. The cubic root of 780041085 is about 920.5325701117.

The spelling of 780041085 in words is "seven hundred eighty million, forty-one thousand, eighty-five".