840802655 has 32 divisors (see below), whose sum is σ = 1301322240. Its totient is φ = 506056320.

The previous prime is 840802637. The next prime is 840802657. The reversal of 840802655 is 556208048.

It is not a de Polignac number, because 840802655 - 2¹² = 840798559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840802657) 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, 26489 + ... + 48818.

It is an arithmetic number, because the mean of its divisors is an integer number (40666320).

Almost surely, 2^840802655 is an apocalyptic number.

840802655 is a deficient number, since it is larger than the sum of its proper divisors (460519585).

840802655 is a wasteful number, since it uses less digits than its factorization.

840802655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75359.

The product of its (nonzero) digits is 76800, while the sum is 38.

The square root of 840802655 is about 28996.5973003730. The cubic root of 840802655 is about 943.8392306023.

The spelling of 840802655 in words is "eight hundred forty million, eight hundred two thousand, six hundred fifty-five".