77373740 has 24 divisors (see below), whose sum is σ = 168089040. Its totient is φ = 29882048.

The previous prime is 77373739. The next prime is 77373743. The reversal of 77373740 is 4737377.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 77373694 and 77373703.

It is not an unprimeable number, because it can be changed into a prime (77373743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66122 + ... + 67281.

It is an arithmetic number, because the mean of its divisors is an integer number (7003710).

Almost surely, 2^77373740 is an apocalyptic number.

It is an amenable number.

77373740 is an abundant number, since it is smaller than the sum of its proper divisors (90715300).

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

77373740 is a wasteful number, since it uses less digits than its factorization.

77373740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133441 (or 133439 counting only the distinct ones).

The product of its (nonzero) digits is 86436, while the sum is 38.

The square root of 77373740 is about 8796.2344216147. The cubic root of 77373740 is about 426.1192918286.

The spelling of 77373740 in words is "seventy-seven million, three hundred seventy-three thousand, seven hundred forty".