77368220 has 24 divisors (see below), whose sum is σ = 162766464. Its totient is φ = 30891456.

The previous prime is 77368217. The next prime is 77368253. The reversal of 77368220 is 2286377.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8954 + ... + 15326.

It is an arithmetic number, because the mean of its divisors is an integer number (6781936).

Almost surely, 2^77368220 is an apocalyptic number.

It is an amenable number.

77368220 is an abundant number, since it is smaller than the sum of its proper divisors (85398244).

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

77368220 is a wasteful number, since it uses less digits than its factorization.

77368220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6989 (or 6987 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 77368220 is about 8795.9206453901. The cubic root of 77368220 is about 426.1091581819.

The spelling of 77368220 in words is "seventy-seven million, three hundred sixty-eight thousand, two hundred twenty".