77055406 has 4 divisors (see below), whose sum is σ = 115583112. Its totient is φ = 38527702.

The previous prime is 77055397. The next prime is 77055413. The reversal of 77055406 is 60455077.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19263850 + ... + 19263853.

It is an arithmetic number, because the mean of its divisors is an integer number (28895778).

Almost surely, 2^77055406 is an apocalyptic number.

77055406 is a deficient number, since it is larger than the sum of its proper divisors (38527706).

77055406 is a wasteful number, since it uses less digits than its factorization.

77055406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38527705.

The product of its (nonzero) digits is 29400, while the sum is 34.

The square root of 77055406 is about 8778.1208695256. The cubic root of 77055406 is about 425.5341031295.

The spelling of 77055406 in words is "seventy-seven million, fifty-five thousand, four hundred six".