68845131 has 6 divisors (see below), whose sum is σ = 99442980. Its totient is φ = 45896748.

The previous prime is 68845099. The next prime is 68845201. The reversal of 68845131 is 13154886.

68845131 is a `hidden beast` number, since 68 + 84 + 513 + 1 = 666.

It is not a de Polignac number, because 68845131 - 2⁵ = 68845099 is a prime.

It is a super-2 number, since 2×68845131² = 9479304124814322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68845031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3824721 + ... + 3824738.

It is an arithmetic number, because the mean of its divisors is an integer number (16573830).

Almost surely, 2^68845131 is an apocalyptic number.

68845131 is a deficient number, since it is larger than the sum of its proper divisors (30597849).

68845131 is a wasteful number, since it uses less digits than its factorization.

68845131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7649465 (or 7649462 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 68845131 is about 8297.2966079320. The cubic root of 68845131 is about 409.8495005826.

The spelling of 68845131 in words is "sixty-eight million, eight hundred forty-five thousand, one hundred thirty-one".