77241687 has 8 divisors (see below), whose sum is σ = 104526336. Its totient is φ = 50725752.

The previous prime is 77241653. The next prime is 77241701. The reversal of 77241687 is 78614277.

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

It is not a de Polignac number, because 77241687 - 2⁸ = 77241431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77241187) 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, 191943 + ... + 192344.

It is an arithmetic number, because the mean of its divisors is an integer number (13065792).

Almost surely, 2^77241687 is an apocalyptic number.

77241687 is a deficient number, since it is larger than the sum of its proper divisors (27284649).

77241687 is a wasteful number, since it uses less digits than its factorization.

77241687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384357.

The product of its digits is 131712, while the sum is 42.

The square root of 77241687 is about 8788.7249928531. The cubic root of 77241687 is about 425.8767359208.

The spelling of 77241687 in words is "seventy-seven million, two hundred forty-one thousand, six hundred eighty-seven".