77020443 has 8 divisors (see below), whose sum is σ = 114104400. Its totient is φ = 51346944.

The previous prime is 77020417. The next prime is 77020459. The reversal of 77020443 is 34402077.

It is not a de Polignac number, because 77020443 - 2¹⁰ = 77019419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 2852609 = 77020443 / (7 + 7 + 0 + 2 + 0 + 4 + 4 + 3).

It is not an unprimeable number, because it can be changed into a prime (77020403) 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, 1426278 + ... + 1426331.

It is an arithmetic number, because the mean of its divisors is an integer number (14263050).

Almost surely, 2^77020443 is an apocalyptic number.

77020443 is a deficient number, since it is larger than the sum of its proper divisors (37083957).

77020443 is a wasteful number, since it uses less digits than its factorization.

77020443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2852618 (or 2852612 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 77020443 is about 8776.1291581198. The cubic root of 77020443 is about 425.4697329989.

The spelling of 77020443 in words is "seventy-seven million, twenty thousand, four hundred forty-three".