806979155 has 16 divisors (see below), whose sum is σ = 984096000. Its totient is φ = 635128032.

The previous prime is 806979149. The next prime is 806979163. The reversal of 806979155 is 551979608.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 806979155 - 2²⁰ = 805930579 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 501362 + ... + 502968.

It is an arithmetic number, because the mean of its divisors is an integer number (61506000).

Almost surely, 2^806979155 is an apocalyptic number.

806979155 is a deficient number, since it is larger than the sum of its proper divisors (177116845).

806979155 is a wasteful number, since it uses less digits than its factorization.

806979155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3178.

The product of its (nonzero) digits is 680400, while the sum is 50.

The square root of 806979155 is about 28407.3785309380. The cubic root of 806979155 is about 931.0094850248.

The spelling of 806979155 in words is "eight hundred six million, nine hundred seventy-nine thousand, one hundred fifty-five".