68580405 has 32 divisors (see below), whose sum is σ = 128342400. Its totient is φ = 34649856.

The previous prime is 68580403. The next prime is 68580433. The reversal of 68580405 is 50408586.

It is a happy number.

It is not a de Polignac number, because 68580405 - 2¹ = 68580403 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68580405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68580403) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10804 + ... + 15933.

It is an arithmetic number, because the mean of its divisors is an integer number (4010700).

Almost surely, 2^68580405 is an apocalyptic number.

It is an amenable number.

68580405 is a deficient number, since it is larger than the sum of its proper divisors (59761995).

68580405 is a wasteful number, since it uses less digits than its factorization.

68580405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26770 (or 26764 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 68580405 is about 8281.3286977393. The cubic root of 68580405 is about 409.3235026805.

The spelling of 68580405 in words is "sixty-eight million, five hundred eighty thousand, four hundred five".