68467257 has 12 divisors (see below), whose sum is σ = 99620820. Its totient is φ = 45310848.

The previous prime is 68467249. The next prime is 68467261. The reversal of 68467257 is 75276486.

It can be written as a sum of positive squares in 2 ways, for example, as 14356521 + 54110736 = 3789^2 + 7356^2 .

It is not a de Polignac number, because 68467257 - 2³ = 68467249 is a prime.

It is a super-2 number, since 2×68467257² = 9375530562208098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68467237) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26532 + ... + 28997.

It is an arithmetic number, because the mean of its divisors is an integer number (8301735).

Almost surely, 2^68467257 is an apocalyptic number.

It is an amenable number.

68467257 is a deficient number, since it is larger than the sum of its proper divisors (31153563).

68467257 is a wasteful number, since it uses less digits than its factorization.

68467257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55672 (or 55669 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The square root of 68467257 is about 8274.4943652165. The cubic root of 68467257 is about 409.0982700763.

The spelling of 68467257 in words is "sixty-eight million, four hundred sixty-seven thousand, two hundred fifty-seven".