77773740 has 48 divisors (see below), whose sum is σ = 237565440. Its totient is φ = 18854080.

The previous prime is 77773723. The next prime is 77773747. The reversal of 77773740 is 4737777.

77773740 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

77773740 is strictly pandigital in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 77773692 and 77773701.

It is not an unprimeable number, because it can be changed into a prime (77773747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58260 + ... + 59579.

It is an arithmetic number, because the mean of its divisors is an integer number (4949280).

Almost surely, 2^77773740 is an apocalyptic number.

It is an amenable number.

77773740 is an abundant number, since it is smaller than the sum of its proper divisors (159791700).

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

77773740 is a wasteful number, since it uses less digits than its factorization.

77773740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117862 (or 117860 counting only the distinct ones).

The product of its (nonzero) digits is 201684, while the sum is 42.

The square root of 77773740 is about 8818.9421134283. The cubic root of 77773740 is about 426.8523348288.

It can be divided in two parts, 777737 and 40, that added together give a palindrome (777777).

The spelling of 77773740 in words is "seventy-seven million, seven hundred seventy-three thousand, seven hundred forty".