77690241 has 12 divisors (see below), whose sum is σ = 113572368. Its totient is φ = 51168984.

The previous prime is 77690231. The next prime is 77690257. The reversal of 77690241 is 14209677.

It is a happy number.

It is not a de Polignac number, because 77690241 - 2¹⁹ = 77165953 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 77690196 and 77690205.

It is not an unprimeable number, because it can be changed into a prime (77690231) 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 11 ways as a sum of consecutive naturals, for example, 51255 + ... + 52748.

It is an arithmetic number, because the mean of its divisors is an integer number (9464364).

Almost surely, 2^77690241 is an apocalyptic number.

It is an amenable number.

77690241 is a deficient number, since it is larger than the sum of its proper divisors (35882127).

77690241 is a wasteful number, since it uses less digits than its factorization.

77690241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104092 (or 104089 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 77690241 is about 8814.2067708898. The cubic root of 77690241 is about 426.6995218704.

The spelling of 77690241 in words is "seventy-seven million, six hundred ninety thousand, two hundred forty-one".