77772346 has 8 divisors (see below), whose sum is σ = 116950644. Its totient is φ = 38788800.

The previous prime is 77772329. The next prime is 77772347. The reversal of 77772346 is 64327777.

It can be written as a sum of positive squares in 2 ways, for example, as 77704225 + 68121 = 8815^2 + 261^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (77772347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47685 + ... + 49288.

Almost surely, 2^77772346 is an apocalyptic number.

77772346 is a deficient number, since it is larger than the sum of its proper divisors (39178298).

77772346 is a wasteful number, since it uses less digits than its factorization.

77772346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97376.

The product of its digits is 345744, while the sum is 43.

The square root of 77772346 is about 8818.8630786514. The cubic root of 77772346 is about 426.8497845434.

The spelling of 77772346 in words is "seventy-seven million, seven hundred seventy-two thousand, three hundred forty-six".