763640406 has 32 divisors (see below), whose sum is σ = 1722314880. Its totient is φ = 250746408.

The previous prime is 763640393. The next prime is 763640407. The reversal of 763640406 is 604046367.

763640406 is a `hidden beast` number, since 7 + 6 + 3 + 640 + 4 + 0 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (763640407) 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, 101916 + ... + 109151.

It is an arithmetic number, because the mean of its divisors is an integer number (53822340).

Almost surely, 2^763640406 is an apocalyptic number.

763640406 is an abundant number, since it is smaller than the sum of its proper divisors (958674474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

763640406 is a wasteful number, since it uses less digits than its factorization.

763640406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211145 (or 211139 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

The square root of 763640406 is about 27634.0443294137. The cubic root of 763640406 is about 914.0352960687.

The spelling of 763640406 in words is "seven hundred sixty-three million, six hundred forty thousand, four hundred six".