77241013 has 8 divisors (see below), whose sum is σ = 82145880. Its totient is φ = 72376320.

The previous prime is 77241001. The next prime is 77241041. The reversal of 77241013 is 31014277.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14799409 + 62441604 = 3847^2 + 7902^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 77241013 - 2¹³ = 77232821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77241313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6028 + ... + 13813.

It is an arithmetic number, because the mean of its divisors is an integer number (10268235).

Almost surely, 2^77241013 is an apocalyptic number.

It is an amenable number.

77241013 is a deficient number, since it is larger than the sum of its proper divisors (4904867).

77241013 is a wasteful number, since it uses less digits than its factorization.

77241013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20087.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 77241013 is about 8788.6866481858. The cubic root of 77241013 is about 425.8754972039.

The spelling of 77241013 in words is "seventy-seven million, two hundred forty-one thousand, thirteen".