77204245 has 8 divisors (see below), whose sum is σ = 93511584. Its totient is φ = 61185744.

The previous prime is 77204233. The next prime is 77204263. The reversal of 77204245 is 54240277.

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 77204245 - 2⁵ = 77204213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 71619 + ... + 72688.

It is an arithmetic number, because the mean of its divisors is an integer number (11688948).

Almost surely, 2^77204245 is an apocalyptic number.

It is an amenable number.

77204245 is a deficient number, since it is larger than the sum of its proper divisors (16307339).

77204245 is a wasteful number, since it uses less digits than its factorization.

77204245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144419.

The product of its (nonzero) digits is 15680, while the sum is 31.

The square root of 77204245 is about 8786.5946190774. The cubic root of 77204245 is about 425.8079118848.

The spelling of 77204245 in words is "seventy-seven million, two hundred four thousand, two hundred forty-five".