68406610 has 8 divisors (see below), whose sum is σ = 123131916. Its totient is φ = 27362640.

The previous prime is 68406607. The next prime is 68406617. The reversal of 68406610 is 1660486.

It can be written as a sum of positive squares in 2 ways, for example, as 63984001 + 4422609 = 7999^2 + 2103^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (68406617) 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, 3420321 + ... + 3420340.

Almost surely, 2^68406610 is an apocalyptic number.

68406610 is a deficient number, since it is larger than the sum of its proper divisors (54725306).

68406610 is a wasteful number, since it uses less digits than its factorization.

68406610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6840668.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 68406610 is about 8270.8288581012. The cubic root of 68406610 is about 408.9774438933.

The spelling of 68406610 in words is "sixty-eight million, four hundred six thousand, six hundred ten".