77830361 has 4 divisors (see below), whose sum is σ = 88948992. Its totient is φ = 66711732.

The previous prime is 77830343. The next prime is 77830373. The reversal of 77830361 is 16303877.

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, and also an emirpimes, since its reverse is a distinct semiprime: 16303877 = 47 ⋅346891.

It is a cyclic number.

It is not a de Polignac number, because 77830361 - 2¹⁰ = 77829337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77830561) 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 3 ways as a sum of consecutive naturals, for example, 5559305 + ... + 5559318.

It is an arithmetic number, because the mean of its divisors is an integer number (22237248).

Almost surely, 2^77830361 is an apocalyptic number.

It is an amenable number.

77830361 is a deficient number, since it is larger than the sum of its proper divisors (11118631).

77830361 is a wasteful number, since it uses less digits than its factorization.

77830361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11118630.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 77830361 is about 8822.1517216607. The cubic root of 77830361 is about 426.9558956763.

The spelling of 77830361 in words is "seventy-seven million, eight hundred thirty thousand, three hundred sixty-one".