77233697 has 4 divisors (see below), whose sum is σ = 77324676. Its totient is φ = 77142720.

The previous prime is 77233661. The next prime is 77233721. The reversal of 77233697 is 79633277.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 74926336 + 2307361 = 8656^2 + 1519^2 .

It is a cyclic number.

It is not a de Polignac number, because 77233697 - 2⁸ = 77233441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77233657) 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, 44204 + ... + 45917.

It is an arithmetic number, because the mean of its divisors is an integer number (19331169).

Almost surely, 2^77233697 is an apocalyptic number.

It is an amenable number.

77233697 is a deficient number, since it is larger than the sum of its proper divisors (90979).

77233697 is an equidigital number, since it uses as much as digits as its factorization.

77233697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90978.

The product of its digits is 333396, while the sum is 44.

The square root of 77233697 is about 8788.2704214197. The cubic root of 77233697 is about 425.8620509643.

The spelling of 77233697 in words is "seventy-seven million, two hundred thirty-three thousand, six hundred ninety-seven".