77213876 has 12 divisors (see below), whose sum is σ = 135872100. Its totient is φ = 38393280.

The previous prime is 77213827. The next prime is 77213887. The reversal of 77213876 is 67831277.

It can be written as a sum of positive squares in 2 ways, for example, as 35093776 + 42120100 = 5924^2 + 6490^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 52601 + ... + 54048.

It is an arithmetic number, because the mean of its divisors is an integer number (11322675).

Almost surely, 2^77213876 is an apocalyptic number.

It is an amenable number.

77213876 is a deficient number, since it is larger than the sum of its proper divisors (58658224).

77213876 is a wasteful number, since it uses less digits than its factorization.

77213876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106834 (or 106832 counting only the distinct ones).

The product of its digits is 98784, while the sum is 41.

The square root of 77213876 is about 8787.1426527626. The cubic root of 77213876 is about 425.8256172389.

The spelling of 77213876 in words is "seventy-seven million, two hundred thirteen thousand, eight hundred seventy-six".