577778340 has 24 divisors (see below), whose sum is σ = 1617779520. Its totient is φ = 154074208.

The previous prime is 577778329. The next prime is 577778359. The reversal of 577778340 is 43877775.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 577778340.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4814760 + ... + 4814879.

It is an arithmetic number, because the mean of its divisors is an integer number (67407480).

Almost surely, 2^577778340 is an apocalyptic number.

It is an amenable number.

577778340 is an abundant number, since it is smaller than the sum of its proper divisors (1040001180).

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

577778340 is a wasteful number, since it uses less digits than its factorization.

577778340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9629651 (or 9629649 counting only the distinct ones).

The product of its (nonzero) digits is 1152480, while the sum is 48.

The square root of 577778340 is about 24037.0201980196. The cubic root of 577778340 is about 832.8889217957. Note that the first 3 decimals are identical.

The spelling of 577778340 in words is "five hundred seventy-seven million, seven hundred seventy-eight thousand, three hundred forty".