77601320 has 32 divisors (see below), whose sum is σ = 183794400. Its totient is φ = 29406528.

The previous prime is 77601317. The next prime is 77601323. The reversal of 77601320 is 2310677.

It is an interprime number because it is at equal distance from previous prime (77601317) and next prime (77601323).

It is a self number, because there is not a number n which added to its sum of digits gives 77601320.

It is not an unprimeable number, because it can be changed into a prime (77601323) 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, 50294 + ... + 51813.

It is an arithmetic number, because the mean of its divisors is an integer number (5743575).

Almost surely, 2^77601320 is an apocalyptic number.

It is an amenable number.

77601320 is an abundant number, since it is smaller than the sum of its proper divisors (106193080).

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

77601320 is a wasteful number, since it uses less digits than its factorization.

77601320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102137 (or 102133 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 26.

The square root of 77601320 is about 8809.1611405400. The cubic root of 77601320 is about 426.5366655806.

Adding to 77601320 its reverse (2310677), we get a palindrome (79911997).

The spelling of 77601320 in words is "seventy-seven million, six hundred one thousand, three hundred twenty".