77420341 has 4 divisors (see below), whose sum is σ = 79308684. Its totient is φ = 75532000.

The previous prime is 77420297. The next prime is 77420347. The reversal of 77420341 is 14302477.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18576100 + 58844241 = 4310^2 + 7671^2 .

It is a cyclic number.

It is not a de Polignac number, because 77420341 - 2⁹ = 77419829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77420347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 944110 + ... + 944191.

It is an arithmetic number, because the mean of its divisors is an integer number (19827171).

Almost surely, 2^77420341 is an apocalyptic number.

It is an amenable number.

77420341 is a deficient number, since it is larger than the sum of its proper divisors (1888343).

77420341 is a wasteful number, since it uses less digits than its factorization.

77420341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1888342.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 77420341 is about 8798.8829404647. The cubic root of 77420341 is about 426.2048229998.

It can be divided in two parts, 774 and 20341, that added together give a triangular number (21115 = T₂₀₅).

The spelling of 77420341 in words is "seventy-seven million, four hundred twenty thousand, three hundred forty-one".