77320086 has 16 divisors (see below), whose sum is σ = 154740144. Its totient is φ = 25756704.

The previous prime is 77320073. The next prime is 77320109. The reversal of 77320086 is 68002377.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9180 + ... + 15456.

It is an arithmetic number, because the mean of its divisors is an integer number (9671259).

Almost surely, 2^77320086 is an apocalyptic number.

77320086 is an abundant number, since it is smaller than the sum of its proper divisors (77420058).

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

77320086 is a wasteful number, since it uses less digits than its factorization.

77320086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8335.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 77320086 is about 8793.1840649448. The cubic root of 77320086 is about 426.0207730839.

The spelling of 77320086 in words is "seventy-seven million, three hundred twenty thousand, eighty-six".