68670531 has 48 divisors (see below), whose sum is σ = 111650400. Its totient is φ = 41564160.

The previous prime is 68670529. The next prime is 68670533. The reversal of 68670531 is 13507686.

68670531 is a `hidden beast` number, since 68 + 67 + 0 + 531 = 666.

It is an interprime number because it is at equal distance from previous prime (68670529) and next prime (68670533).

It is not a de Polignac number, because 68670531 - 2¹ = 68670529 is a prime.

It is a super-2 number, since 2×68670531² = 9431283655643922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68670533) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 771535 + ... + 771623.

It is an arithmetic number, because the mean of its divisors is an integer number (2326050).

Almost surely, 2^68670531 is an apocalyptic number.

68670531 is a deficient number, since it is larger than the sum of its proper divisors (42979869).

68670531 is a wasteful number, since it uses less digits than its factorization.

68670531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 68670531 is about 8286.7684292491. The cubic root of 68670531 is about 409.5027304625.

It can be divided in two parts, 686 and 70531, that added together give a palindrome (71217).

The spelling of 68670531 in words is "sixty-eight million, six hundred seventy thousand, five hundred thirty-one".