77996797 has 8 divisors (see below), whose sum is σ = 79930400. Its totient is φ = 76068720.

The previous prime is 77996773. The next prime is 77996839. The reversal of 77996797 is 79769977.

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

It is not a de Polignac number, because 77996797 - 2¹⁹ = 77472509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77996717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49579 + ... + 51127.

It is an arithmetic number, because the mean of its divisors is an integer number (9991300).

Almost surely, 2^77996797 is an apocalyptic number.

It is an amenable number.

77996797 is a deficient number, since it is larger than the sum of its proper divisors (1933603).

77996797 is a wasteful number, since it uses less digits than its factorization.

77996797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2763.

The product of its digits is 10501974, while the sum is 61.

The square root of 77996797 is about 8831.5795302992. The cubic root of 77996797 is about 427.2600196599.

The spelling of 77996797 in words is "seventy-seven million, nine hundred ninety-six thousand, seven hundred ninety-seven".