77213773 has 16 divisors (see below), whose sum is σ = 95276160. Its totient is φ = 60935616.

The previous prime is 77213723. The next prime is 77213789. The reversal of 77213773 is 37731277.

It is a happy number.

It is not a de Polignac number, because 77213773 - 2¹⁷ = 77082701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77213723) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 45486 + ... + 47152.

It is an arithmetic number, because the mean of its divisors is an integer number (5954760).

Almost surely, 2^77213773 is an apocalyptic number.

It is an amenable number.

77213773 is a deficient number, since it is larger than the sum of its proper divisors (18062387).

77213773 is a wasteful number, since it uses less digits than its factorization.

77213773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2196.

The product of its digits is 43218, while the sum is 37.

The square root of 77213773 is about 8787.1367919249. The cubic root of 77213773 is about 425.8254278945.

The spelling of 77213773 in words is "seventy-seven million, two hundred thirteen thousand, seven hundred seventy-three".