68906602 has 8 divisors (see below), whose sum is σ = 103399236. Its totient is φ = 34440192.

The previous prime is 68906599. The next prime is 68906603. The reversal of 68906602 is 20660986.

It is a Cunningham number, because it is equal to 8301²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 68906601 + 1 = 8301^2 + 1^2 .

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 (68906603) 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, 2538 + ... + 12010.

Almost surely, 2^68906602 is an apocalyptic number.

68906602 is a deficient number, since it is larger than the sum of its proper divisors (34492634).

68906602 is a wasteful number, since it uses less digits than its factorization.

68906602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13112.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 68906602 is about 8301.0000602337. Note that the first 4 decimals coincide. The cubic root of 68906602 is about 409.9714475457.

The spelling of 68906602 in words is "sixty-eight million, nine hundred six thousand, six hundred two".