77056443 has 12 divisors (see below), whose sum is σ = 111433608. Its totient is φ = 51311040.

The previous prime is 77056433. The next prime is 77056471. The reversal of 77056443 is 34465077.

77056443 is a `hidden beast` number, since 7 + 7 + 0 + 5 + 644 + 3 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-77056443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77056398 and 77056407.

It is not an unprimeable number, because it can be changed into a prime (77056403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4003 + ... + 13043.

It is an arithmetic number, because the mean of its divisors is an integer number (9286134).

Almost surely, 2^77056443 is an apocalyptic number.

77056443 is a deficient number, since it is larger than the sum of its proper divisors (34377165).

77056443 is a wasteful number, since it uses less digits than its factorization.

77056443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9994 (or 9991 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 36.

The square root of 77056443 is about 8778.1799366383. The cubic root of 77056443 is about 425.5360120455.

The spelling of 77056443 in words is "seventy-seven million, fifty-six thousand, four hundred forty-three".