68437287 has 12 divisors (see below), whose sum is σ = 98931664. Its totient is φ = 45588960.

The previous prime is 68437279. The next prime is 68437289. The reversal of 68437287 is 78273486.

It is a happy number.

It is not a de Polignac number, because 68437287 - 2³ = 68437279 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 (68437289) 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, 14403 + ... + 18555.

Almost surely, 2^68437287 is an apocalyptic number.

68437287 is a deficient number, since it is larger than the sum of its proper divisors (30494377).

68437287 is a wasteful number, since it uses less digits than its factorization.

68437287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5990 (or 5987 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 68437287 is about 8272.6831802022. The cubic root of 68437287 is about 409.0385701795.

The spelling of 68437287 in words is "sixty-eight million, four hundred thirty-seven thousand, two hundred eighty-seven".