77212103 has 4 divisors (see below), whose sum is σ = 79702848. Its totient is φ = 74721360.

The previous prime is 77212087. The next prime is 77212139. The reversal of 77212103 is 30121277.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30121277 = 4483 ⋅6719.

It is a cyclic number.

It is not a de Polignac number, because 77212103 - 2⁴ = 77212087 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 (77212183) 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, 1245326 + ... + 1245387.

It is an arithmetic number, because the mean of its divisors is an integer number (19925712).

Almost surely, 2^77212103 is an apocalyptic number.

77212103 is a deficient number, since it is larger than the sum of its proper divisors (2490745).

77212103 is a wasteful number, since it uses less digits than its factorization.

77212103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2490744.

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 77212103 is about 8787.0417661463. The cubic root of 77212103 is about 425.8223579172.

The spelling of 77212103 in words is "seventy-seven million, two hundred twelve thousand, one hundred three".