77461378 has 16 divisors (see below), whose sum is σ = 125426880. Its totient is φ = 35768656.

The previous prime is 77461357. The next prime is 77461379. The reversal of 77461378 is 87316477.

It is not an unprimeable number, because it can be changed into a prime (77461379) 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, 27700 + ... + 30367.

It is an arithmetic number, because the mean of its divisors is an integer number (7839180).

Almost surely, 2^77461378 is an apocalyptic number.

77461378 is a deficient number, since it is larger than the sum of its proper divisors (47965502).

77461378 is a wasteful number, since it uses less digits than its factorization.

77461378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58121.

The product of its digits is 197568, while the sum is 43.

The square root of 77461378 is about 8801.2145752731. The cubic root of 77461378 is about 426.2801136266.

The spelling of 77461378 in words is "seventy-seven million, four hundred sixty-one thousand, three hundred seventy-eight".