77705153 has 4 divisors (see below), whose sum is σ = 78139440. Its totient is φ = 77270868.

The previous prime is 77705141. The next prime is 77705203. The reversal of 77705153 is 35150777.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 77705153 - 2⁸ = 77704897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77708153) 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, 216875 + ... + 217232.

It is an arithmetic number, because the mean of its divisors is an integer number (19534860).

Almost surely, 2^77705153 is an apocalyptic number.

It is an amenable number.

77705153 is a deficient number, since it is larger than the sum of its proper divisors (434287).

77705153 is a wasteful number, since it uses less digits than its factorization.

77705153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434286.

The product of its (nonzero) digits is 25725, while the sum is 35.

The square root of 77705153 is about 8815.0526373925. The cubic root of 77705153 is about 426.7268206067.

The spelling of 77705153 in words is "seventy-seven million, seven hundred five thousand, one hundred fifty-three".