77996798 has 16 divisors (see below), whose sum is σ = 127770480. Its totient is φ = 35414400.

The previous prime is 77996773. The next prime is 77996839. The reversal of 77996798 is 89769977.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 77996798.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31568 + ... + 33948.

It is an arithmetic number, because the mean of its divisors is an integer number (7985655).

Almost surely, 2^77996798 is an apocalyptic number.

77996798 is a deficient number, since it is larger than the sum of its proper divisors (49773682).

77996798 is a wasteful number, since it uses less digits than its factorization.

77996798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3883.

The product of its digits is 12002256, while the sum is 62.

The square root of 77996798 is about 8831.5795869142. The cubic root of 77996798 is about 427.2600214859.

The spelling of 77996798 in words is "seventy-seven million, nine hundred ninety-six thousand, seven hundred ninety-eight".