268649501 has 4 divisors (see below), whose sum is σ = 271160352. Its totient is φ = 266138652.

The previous prime is 268649471. The next prime is 268649519. The reversal of 268649501 is 105946862.

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 268649501 - 2¹⁴ = 268633117 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 (268649561) 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, 1255265 + ... + 1255478.

It is an arithmetic number, because the mean of its divisors is an integer number (67790088).

Almost surely, 2^268649501 is an apocalyptic number.

It is an amenable number.

268649501 is a deficient number, since it is larger than the sum of its proper divisors (2510851).

268649501 is a wasteful number, since it uses less digits than its factorization.

268649501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2510850.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 268649501 is about 16390.5308333806. The cubic root of 268649501 is about 645.2509897940.

The spelling of 268649501 in words is "two hundred sixty-eight million, six hundred forty-nine thousand, five hundred one".