77241857 has 8 divisors (see below), whose sum is σ = 96301632. Its totient is φ = 60188400.

The previous prime is 77241851. The next prime is 77241893. The reversal of 77241857 is 75814277.

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 77241857 - 2⁴ = 77241841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77241851) 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 7 ways as a sum of consecutive naturals, for example, 501494 + ... + 501647.

It is an arithmetic number, because the mean of its divisors is an integer number (12037704).

Almost surely, 2^77241857 is an apocalyptic number.

77241857 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

It is an amenable number.

77241857 is a deficient number, since it is larger than the sum of its proper divisors (19059775).

77241857 is a wasteful number, since it uses less digits than its factorization.

77241857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003159.

The product of its digits is 109760, while the sum is 41.

The square root of 77241857 is about 8788.7346643302. The cubic root of 77241857 is about 425.8770483557.

The spelling of 77241857 in words is "seventy-seven million, two hundred forty-one thousand, eight hundred fifty-seven".