68730040 has 16 divisors (see below), whose sum is σ = 154642680. Its totient is φ = 27492000.

The previous prime is 68730037. The next prime is 68730043. The reversal of 68730040 is 4003786.

It is an interprime number because it is at equal distance from previous prime (68730037) and next prime (68730043).

It is a junction number, because it is equal to n+sod(n) for n = 68729990 and 68730008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68730043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 859086 + ... + 859165.

Almost surely, 2^68730040 is an apocalyptic number.

It is an amenable number.

68730040 is an abundant number, since it is smaller than the sum of its proper divisors (85912640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68730040 is a wasteful number, since it uses less digits than its factorization.

68730040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1718262 (or 1718258 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 68730040 is about 8290.3582552264. The cubic root of 68730040 is about 409.6209862447.

The spelling of 68730040 in words is "sixty-eight million, seven hundred thirty thousand, forty".