77700385 has 16 divisors (see below), whose sum is σ = 108573696. Its totient is φ = 52273728.

The previous prime is 77700379. The next prime is 77700401. The reversal of 77700385 is 58300777.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77700385 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 19089 + ... + 22798.

It is an arithmetic number, because the mean of its divisors is an integer number (6785856).

Almost surely, 2^77700385 is an apocalyptic number.

It is an amenable number.

77700385 is a deficient number, since it is larger than the sum of its proper divisors (30873311).

77700385 is a wasteful number, since it uses less digits than its factorization.

77700385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41952.

The product of its (nonzero) digits is 41160, while the sum is 37.

The square root of 77700385 is about 8814.7821867588. The cubic root of 77700385 is about 426.7180924207.

The spelling of 77700385 in words is "seventy-seven million, seven hundred thousand, three hundred eighty-five".