77084213 has 4 divisors (see below), whose sum is σ = 77104608. Its totient is φ = 77063820.

The previous prime is 77084173. The next prime is 77084219. The reversal of 77084213 is 31248077.

It is a happy number.

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: 31248077 = 7 ⋅4464011.

It is a cyclic number.

It is not a de Polignac number, because 77084213 - 2⁸ = 77083957 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77084213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77084219) 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, 2681 + ... + 12702.

It is an arithmetic number, because the mean of its divisors is an integer number (19276152).

Almost surely, 2^77084213 is an apocalyptic number.

It is an amenable number.

77084213 is a deficient number, since it is larger than the sum of its proper divisors (20395).

77084213 is a wasteful number, since it uses less digits than its factorization.

77084213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20394.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 77084213 is about 8779.7615571267. The cubic root of 77084213 is about 425.5871248631.

The spelling of 77084213 in words is "seventy-seven million, eighty-four thousand, two hundred thirteen".