68285511 has 40 divisors (see below), whose sum is σ = 118065024. Its totient is φ = 38523600.

The previous prime is 68285509. The next prime is 68285513. The reversal of 68285511 is 11558286.

68285511 = 9² + 10² + ... + 589².

68285511 is a `hidden beast` number, since 68 + 2 + 85 + 511 = 666.

It is an interprime number because it is at equal distance from previous prime (68285509) and next prime (68285513).

It is not a de Polignac number, because 68285511 - 2¹ = 68285509 is a prime.

It is a super-2 number, since 2×68285511² = 9325822025062242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68285513) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 46336 + ... + 47786.

Almost surely, 2^68285511 is an apocalyptic number.

68285511 is a deficient number, since it is larger than the sum of its proper divisors (49779513).

68285511 is a wasteful number, since it uses less digits than its factorization.

68285511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1553 (or 1544 counting only the distinct ones).

The product of its digits is 19200, while the sum is 36.

The square root of 68285511 is about 8263.5047649287. The cubic root of 68285511 is about 408.7359661876.

The spelling of 68285511 in words is "sixty-eight million, two hundred eighty-five thousand, five hundred eleven".