268672557 has 16 divisors (see below), whose sum is σ = 367104320. Its totient is φ = 174690432.

The previous prime is 268672553. The next prime is 268672561. The reversal of 268672557 is 755276862.

It is an interprime number because it is at equal distance from previous prime (268672553) and next prime (268672561).

It is not a de Polignac number, because 268672557 - 2² = 268672553 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 (268672553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127569 + ... + 129657.

It is an arithmetic number, because the mean of its divisors is an integer number (22944020).

Almost surely, 2^268672557 is an apocalyptic number.

It is an amenable number.

268672557 is a deficient number, since it is larger than the sum of its proper divisors (98431763).

268672557 is a wasteful number, since it uses less digits than its factorization.

268672557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3132.

The product of its digits is 1411200, while the sum is 48.

The square root of 268672557 is about 16391.2341512163. The cubic root of 268672557 is about 645.2694481461.

The spelling of 268672557 in words is "two hundred sixty-eight million, six hundred seventy-two thousand, five hundred fifty-seven".