77643041 has 8 divisors (see below), whose sum is σ = 89082240. Its totient is φ = 66290688.

The previous prime is 77642923. The next prime is 77643047. The reversal of 77643041 is 14034677.

It is a happy number.

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 77643041 - 2¹⁰ = 77642017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77642989 and 77643007.

It is not an unprimeable number, because it can be changed into a prime (77643047) 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, 19781 + ... + 23378.

It is an arithmetic number, because the mean of its divisors is an integer number (11135280).

Almost surely, 2^77643041 is an apocalyptic number.

It is an amenable number.

77643041 is a deficient number, since it is larger than the sum of its proper divisors (11439199).

77643041 is a wasteful number, since it uses less digits than its factorization.

77643041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43423.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 77643041 is about 8811.5288684768. The cubic root of 77643041 is about 426.6130918924.

The spelling of 77643041 in words is "seventy-seven million, six hundred forty-three thousand, forty-one".