77233664 has 20 divisors (see below), whose sum is σ = 154317504. Its totient is φ = 38616576.

The previous prime is 77233661. The next prime is 77233721. The reversal of 77233664 is 46633277.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77233661) 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 as a sum of consecutive naturals, namely, 74912 + ... + 75935.

Almost surely, 2^77233664 is an apocalyptic number.

It is an amenable number.

77233664 is a deficient number, since it is larger than the sum of its proper divisors (77083840).

77233664 is an equidigital number, since it uses as much as digits as its factorization.

77233664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150865 (or 150849 counting only the distinct ones).

The product of its digits is 127008, while the sum is 38.

The square root of 77233664 is about 8788.2685439169. The cubic root of 77233664 is about 425.8619903109.

The spelling of 77233664 in words is "seventy-seven million, two hundred thirty-three thousand, six hundred sixty-four".