77872341 has 16 divisors (see below), whose sum is σ = 107429888. Its totient is φ = 50122800.

The previous prime is 77872331. The next prime is 77872351. The reversal of 77872341 is 14327877.

It is an interprime number because it is at equal distance from previous prime (77872331) and next prime (77872351).

It is not a de Polignac number, because 77872341 - 2⁷ = 77872213 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 77872341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77872331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58020 + ... + 59346.

It is an arithmetic number, because the mean of its divisors is an integer number (6714368).

Almost surely, 2^77872341 is an apocalyptic number.

It is an amenable number.

77872341 is a deficient number, since it is larger than the sum of its proper divisors (29557547).

77872341 is a wasteful number, since it uses less digits than its factorization.

77872341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1992.

The product of its digits is 65856, while the sum is 39.

The square root of 77872341 is about 8824.5306390765. The cubic root of 77872341 is about 427.0326454464.

The spelling of 77872341 in words is "seventy-seven million, eight hundred seventy-two thousand, three hundred forty-one".