77143741 has 8 divisors (see below), whose sum is σ = 80390520. Its totient is φ = 73936128.

The previous prime is 77143727. The next prime is 77143747. The reversal of 77143741 is 14734177.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 511225 + 76632516 = 715^2 + 8754^2 .

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 77143741 - 2⁷ = 77143613 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77143697 and 77143706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77143747) 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, 5736 + ... + 13681.

It is an arithmetic number, because the mean of its divisors is an integer number (10048815).

Almost surely, 2^77143741 is an apocalyptic number.

It is an amenable number.

77143741 is a deficient number, since it is larger than the sum of its proper divisors (3246779).

77143741 is a wasteful number, since it uses less digits than its factorization.

77143741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19583.

The product of its digits is 16464, while the sum is 34.

The square root of 77143741 is about 8783.1509721739. The cubic root of 77143741 is about 425.6966493720.

The spelling of 77143741 in words is "seventy-seven million, one hundred forty-three thousand, seven hundred forty-one".