263050997 has 4 divisors (see below), whose sum is σ = 286964736. Its totient is φ = 239137260.

The previous prime is 263050973. The next prime is 263050999. The reversal of 263050997 is 799050362.

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 a de Polignac number, because none of the positive numbers 2^k-263050997 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 (263050999) 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, 11956853 + ... + 11956874.

It is an arithmetic number, because the mean of its divisors is an integer number (71741184).

Almost surely, 2^263050997 is an apocalyptic number.

It is an amenable number.

263050997 is a deficient number, since it is larger than the sum of its proper divisors (23913739).

263050997 is a wasteful number, since it uses less digits than its factorization.

263050997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23913738.

The product of its (nonzero) digits is 102060, while the sum is 41.

The square root of 263050997 is about 16218.8469688816. The cubic root of 263050997 is about 640.7372664068.

The spelling of 263050997 in words is "two hundred sixty-three million, fifty thousand, nine hundred ninety-seven".