797640263 has 8 divisors (see below), whose sum is σ = 917048832. Its totient is φ = 679596696.

The previous prime is 797640229. The next prime is 797640269. The reversal of 797640263 is 362046797.

It is a happy number.

797640263 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 797640263 - 2²⁰ = 796591687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (797640269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 339995 + ... + 342332.

It is an arithmetic number, because the mean of its divisors is an integer number (114631104).

Almost surely, 2^797640263 is an apocalyptic number.

797640263 is a deficient number, since it is larger than the sum of its proper divisors (119408569).

797640263 is a wasteful number, since it uses less digits than its factorization.

797640263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682501.

The product of its (nonzero) digits is 381024, while the sum is 44.

The square root of 797640263 is about 28242.5257900210. The cubic root of 797640263 is about 927.4041237416.

The spelling of 797640263 in words is "seven hundred ninety-seven million, six hundred forty thousand, two hundred sixty-three".