763640333 has 4 divisors (see below), whose sum is σ = 766246908. Its totient is φ = 761033760.

The previous prime is 763640321. The next prime is 763640341. The reversal of 763640333 is 333046367.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 333046367 = 73 ⋅4562279.

It can be written as a sum of positive squares in 2 ways, for example, as 608214244 + 155426089 = 24662^2 + 12467^2 .

It is a cyclic number.

It is not a de Polignac number, because 763640333 - 2¹⁶ = 763574797 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 763640293 and 763640302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (763640393) 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, 1302848 + ... + 1303433.

It is an arithmetic number, because the mean of its divisors is an integer number (191561727).

Almost surely, 2^763640333 is an apocalyptic number.

It is an amenable number.

763640333 is a deficient number, since it is larger than the sum of its proper divisors (2606575).

763640333 is a wasteful number, since it uses less digits than its factorization.

763640333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2606574.

The product of its (nonzero) digits is 81648, while the sum is 35.

The square root of 763640333 is about 27634.0430085791. The cubic root of 763640333 is about 914.0352669431.

The spelling of 763640333 in words is "seven hundred sixty-three million, six hundred forty thousand, three hundred thirty-three".