77948684 has 24 divisors (see below), whose sum is σ = 150051216. Its totient is φ = 35431220.

The previous prime is 77948683. The next prime is 77948687. The reversal of 77948684 is 48684977.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

77948684 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

77948684 is strictly pandigital in base 9.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (77948681) 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, 7086239 + ... + 7086249.

It is an arithmetic number, because the mean of its divisors is an integer number (6252134).

Almost surely, 2^77948684 is an apocalyptic number.

It is an amenable number.

77948684 is a deficient number, since it is larger than the sum of its proper divisors (72102532).

77948684 is an frugal number, since it uses more digits than its factorization.

77948684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81 (or 13 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 53.

The square root of 77948684 is about 8828.8551919261. The cubic root of 77948684 is about 427.1721485745.

The spelling of 77948684 in words is "seventy-seven million, nine hundred forty-eight thousand, six hundred eighty-four".