77605213 has 8 divisors (see below), whose sum is σ = 88747328. Its totient is φ = 66477024.

The previous prime is 77605193. The next prime is 77605219. The reversal of 77605213 is 31250677.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77605213 - 2⁹ = 77604701 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 (77605219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15070 + ... + 19552.

It is an arithmetic number, because the mean of its divisors is an integer number (11093416).

Almost surely, 2^77605213 is an apocalyptic number.

It is an amenable number.

77605213 is a deficient number, since it is larger than the sum of its proper divisors (11142115).

77605213 is a wasteful number, since it uses less digits than its factorization.

77605213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6963.

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 77605213 is about 8809.3821009195. The cubic root of 77605213 is about 426.5437981031.

The spelling of 77605213 in words is "seventy-seven million, six hundred five thousand, two hundred thirteen".