77220041 has 4 divisors (see below), whose sum is σ = 77731584. Its totient is φ = 76708500.

The previous prime is 77220029. The next prime is 77220043. The reversal of 77220041 is 14002277.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 77220041 - 2¹⁰ = 77219017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77219989 and 77220016.

It is not an unprimeable number, because it can be changed into a prime (77220043) 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 3 ways as a sum of consecutive naturals, for example, 255545 + ... + 255846.

It is an arithmetic number, because the mean of its divisors is an integer number (19432896).

Almost surely, 2^77220041 is an apocalyptic number.

It is an amenable number.

77220041 is a deficient number, since it is larger than the sum of its proper divisors (511543).

77220041 is a wasteful number, since it uses less digits than its factorization.

77220041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511542.

The product of its (nonzero) digits is 784, while the sum is 23.

The square root of 77220041 is about 8787.4934423873. The cubic root of 77220041 is about 425.8369500252.

The spelling of 77220041 in words is "seventy-seven million, two hundred twenty thousand, forty-one".