780606087 has 4 divisors (see below), whose sum is σ = 1040808120. Its totient is φ = 520404056.

The previous prime is 780606067. The next prime is 780606091.

780606087 is nontrivially palindromic in base 10.

780606087 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 780606087 - 2⁶ = 780606023 is a prime.

It is a super-2 number, since 2×780606087² = 1218691726122903138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780606067) 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, 130101012 + ... + 130101017.

It is an arithmetic number, because the mean of its divisors is an integer number (260202030).

Almost surely, 2^780606087 is an apocalyptic number.

780606087 is a deficient number, since it is larger than the sum of its proper divisors (260202033).

780606087 is a wasteful number, since it uses less digits than its factorization.

780606087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260202032.

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 780606087 is about 27939.3286784060. The cubic root of 780606087 is about 920.7547708947.

The spelling of 780606087 in words is "seven hundred eighty million, six hundred six thousand, eighty-seven".