68587631 has 8 divisors (see below), whose sum is σ = 79330944. Its totient is φ = 58080600.

The previous prime is 68587621. The next prime is 68587637. The reversal of 68587631 is 13678586.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68587631 - 2¹⁸ = 68325487 is a prime.

It is a super-2 number, since 2×68587631² = 9408526252384322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68587637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58445 + ... + 59606.

It is an arithmetic number, because the mean of its divisors is an integer number (9916368).

Almost surely, 2^68587631 is an apocalyptic number.

68587631 is a deficient number, since it is larger than the sum of its proper divisors (10743313).

68587631 is a wasteful number, since it uses less digits than its factorization.

68587631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118141.

The product of its digits is 241920, while the sum is 44.

The square root of 68587631 is about 8281.7649688940. The cubic root of 68587631 is about 409.3378783502.

The spelling of 68587631 in words is "sixty-eight million, five hundred eighty-seven thousand, six hundred thirty-one".