77806122 has 8 divisors (see below), whose sum is σ = 155612256. Its totient is φ = 25935372.

The previous prime is 77806117. The next prime is 77806129. The reversal of 77806122 is 22160877.

It is a sphenic number, since it is the product of 3 distinct primes.

77806122 is an admirable number.

It is a super-4 number, since 4×77806122⁴ (a number of 33 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (77806129) 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, 6483838 + ... + 6483849.

It is an arithmetic number, because the mean of its divisors is an integer number (19451532).

Almost surely, 2^77806122 is an apocalyptic number.

77806122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77806122 is a wasteful number, since it uses less digits than its factorization.

77806122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12967692.

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 77806122 is about 8820.7778568559. Note that the first 3 decimals coincide. The cubic root of 77806122 is about 426.9115682513.

Adding to 77806122 its reverse (22160877), we get a palindrome (99966999).

The spelling of 77806122 in words is "seventy-seven million, eight hundred six thousand, one hundred twenty-two".