268540797 has 16 divisors (see below), whose sum is σ = 409444352. Its totient is φ = 153362160.

The previous prime is 268540787. The next prime is 268540799. The reversal of 268540797 is 797045862.

268540797 = 3854² + 3855² + ... + 3871².

It is not a de Polignac number, because 268540797 - 2⁴ = 268540781 is a prime.

It is a super-2 number, since 2×268540797² = 144228319306790418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268540799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53172 + ... + 58002.

It is an arithmetic number, because the mean of its divisors is an integer number (25590272).

Almost surely, 2^268540797 is an apocalyptic number.

It is an amenable number.

268540797 is a deficient number, since it is larger than the sum of its proper divisors (140903555).

268540797 is a wasteful number, since it uses less digits than its factorization.

268540797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7488.

The product of its (nonzero) digits is 846720, while the sum is 48.

The square root of 268540797 is about 16387.2144368712. The cubic root of 268540797 is about 645.1639484683.

The spelling of 268540797 in words is "two hundred sixty-eight million, five hundred forty thousand, seven hundred ninety-seven".