77422408 has 16 divisors (see below), whose sum is σ = 165905280. Its totient is φ = 33181008.

The previous prime is 77422363. The next prime is 77422409. The reversal of 77422408 is 80422477.

It is not an unprimeable number, because it can be changed into a prime (77422409) 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, 691216 + ... + 691327.

It is an arithmetic number, because the mean of its divisors is an integer number (10369080).

Almost surely, 2^77422408 is an apocalyptic number.

It is an amenable number.

77422408 is an abundant number, since it is smaller than the sum of its proper divisors (88482872).

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

77422408 is a wasteful number, since it uses less digits than its factorization.

77422408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1382556 (or 1382552 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 34.

The square root of 77422408 is about 8799.0003977725. Note that the first 3 decimals coincide. The cubic root of 77422408 is about 426.2086159631.

The spelling of 77422408 in words is "seventy-seven million, four hundred twenty-two thousand, four hundred eight".