77798982 has 8 divisors (see below), whose sum is σ = 155597976. Its totient is φ = 25932992.

The previous prime is 77798969. The next prime is 77798983. The reversal of 77798982 is 28989777.

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

77798982 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77798983) 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, 6483243 + ... + 6483254.

It is an arithmetic number, because the mean of its divisors is an integer number (19449747).

Almost surely, 2^77798982 is an apocalyptic number.

77798982 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.

77798982 is a wasteful number, since it uses less digits than its factorization.

77798982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12966502.

The product of its digits is 3556224, while the sum is 57.

The square root of 77798982 is about 8820.3731213594. The cubic root of 77798982 is about 426.8985091167.

It can be divided in two parts, 7779 and 8982, that added together give a palindrome (16761).

The spelling of 77798982 in words is "seventy-seven million, seven hundred ninety-eight thousand, nine hundred eighty-two".