763663997 has 4 divisors (see below), whose sum is σ = 764365056. Its totient is φ = 762962940.

The previous prime is 763663969. The next prime is 763664003. The reversal of 763663997 is 799366367.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 763663997 - 2⁸ = 763663741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (763663907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 348893 + ... + 351074.

It is an arithmetic number, because the mean of its divisors is an integer number (191091264).

Almost surely, 2^763663997 is an apocalyptic number.

It is an amenable number.

763663997 is a deficient number, since it is larger than the sum of its proper divisors (701059).

763663997 is a wasteful number, since it uses less digits than its factorization.

763663997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701058.

The product of its digits is 7715736, while the sum is 56.

The square root of 763663997 is about 27634.4711727943. The cubic root of 763663997 is about 914.0447083455.

The spelling of 763663997 in words is "seven hundred sixty-three million, six hundred sixty-three thousand, nine hundred ninety-seven".