268723551 has 4 divisors (see below), whose sum is σ = 358298072. Its totient is φ = 179149032.

The previous prime is 268723523. The next prime is 268723579. The reversal of 268723551 is 155327862.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (268723523) and next prime (268723579).

It is not a de Polignac number, because 268723551 - 2⁵ = 268723519 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 (268723591) 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, 44787256 + ... + 44787261.

It is an arithmetic number, because the mean of its divisors is an integer number (89574518).

Almost surely, 2^268723551 is an apocalyptic number.

268723551 is a deficient number, since it is larger than the sum of its proper divisors (89574521).

268723551 is an equidigital number, since it uses as much as digits as its factorization.

268723551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89574520.

The product of its digits is 100800, while the sum is 39.

The square root of 268723551 is about 16392.7896039692. The cubic root of 268723551 is about 645.3102695696.

The spelling of 268723551 in words is "two hundred sixty-eight million, seven hundred twenty-three thousand, five hundred fifty-one".