77216203 has 4 divisors (see below), whose sum is σ = 77562688. Its totient is φ = 76869720.

The previous prime is 77216201. The next prime is 77216207. The reversal of 77216203 is 30261277.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30261277 = 59 ⋅512903.

It is a cyclic number.

It is not a de Polignac number, because 77216203 - 2¹ = 77216201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77216201) 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, 172908 + ... + 173353.

It is an arithmetic number, because the mean of its divisors is an integer number (19390672).

Almost surely, 2^77216203 is an apocalyptic number.

77216203 is a deficient number, since it is larger than the sum of its proper divisors (346485).

77216203 is a wasteful number, since it uses less digits than its factorization.

77216203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346484.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 77216203 is about 8787.2750611324. The cubic root of 77216203 is about 425.8298949081.

It can be divided in two parts, 7721 and 6203, that added together give a square (13924 = 118²).

The spelling of 77216203 in words is "seventy-seven million, two hundred sixteen thousand, two hundred three".