6940822655 has 16 divisors (see below), whose sum is σ = 9259025664. Its totient is φ = 4960189440.

The previous prime is 6940822639. The next prime is 6940822657. The reversal of 6940822655 is 5562280496.

It is a happy number.

It is not a de Polignac number, because 6940822655 - 2⁴ = 6940822639 is a prime.

It is a super-2 number, since 2×6940822655² = 96350038256322498050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6940822657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1720274 + ... + 1724303.

It is an arithmetic number, because the mean of its divisors is an integer number (578689104).

Almost surely, 2^6940822655 is an apocalyptic number.

6940822655 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

6940822655 is a deficient number, since it is larger than the sum of its proper divisors (2318203009).

6940822655 is a wasteful number, since it uses less digits than its factorization.

6940822655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3444626.

The product of its (nonzero) digits is 1036800, while the sum is 47.

The square root of 6940822655 is about 83311.5997625781. The cubic root of 6940822655 is about 1907.5253401287.

The spelling of 6940822655 in words is "six billion, nine hundred forty million, eight hundred twenty-two thousand, six hundred fifty-five".