68900605 has 8 divisors (see below), whose sum is σ = 82741464. Its totient is φ = 55080000.

The previous prime is 68900597. The next prime is 68900633. The reversal of 68900605 is 50600986.

It can be written as a sum of positive squares in 4 ways, for example, as 3193369 + 65707236 = 1787^2 + 8106^2 .

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

It is not a de Polignac number, because 68900605 - 2³ = 68900597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3855 + ... + 12355.

It is an arithmetic number, because the mean of its divisors is an integer number (10342683).

Almost surely, 2^68900605 is an apocalyptic number.

It is an amenable number.

68900605 is a deficient number, since it is larger than the sum of its proper divisors (13840859).

68900605 is a wasteful number, since it uses less digits than its factorization.

68900605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10127.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 68900605 is about 8300.6388308371. The cubic root of 68900605 is about 409.9595538130.

The spelling of 68900605 in words is "sixty-eight million, nine hundred thousand, six hundred five".