77233993 has 16 divisors (see below), whose sum is σ = 82938240. Its totient is φ = 71712000.

The previous prime is 77233987. The next prime is 77233999. The reversal of 77233993 is 39933277.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (77233987) and next prime (77233999).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77233993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77233999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 320353 + ... + 320593.

It is an arithmetic number, because the mean of its divisors is an integer number (5183640).

Almost surely, 2^77233993 is an apocalyptic number.

It is an amenable number.

77233993 is a deficient number, since it is larger than the sum of its proper divisors (5704247).

77233993 is a wasteful number, since it uses less digits than its factorization.

77233993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528.

The product of its digits is 214326, while the sum is 43.

The square root of 77233993 is about 8788.2872620323. The cubic root of 77233993 is about 425.8625950057.

The spelling of 77233993 in words is "seventy-seven million, two hundred thirty-three thousand, nine hundred ninety-three".