68420653 has 16 divisors (see below), whose sum is σ = 85893120. Its totient is φ = 53141616.

The previous prime is 68420647. The next prime is 68420663. The reversal of 68420653 is 35602486.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 68420653 - 2⁵ = 68420621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68420633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8125 + ... + 14242.

It is an arithmetic number, because the mean of its divisors is an integer number (5368320).

Almost surely, 2^68420653 is an apocalyptic number.

It is an amenable number.

68420653 is a deficient number, since it is larger than the sum of its proper divisors (17472467).

68420653 is a wasteful number, since it uses less digits than its factorization.

68420653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22416.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 68420653 is about 8271.6777620988. The cubic root of 68420653 is about 409.0054279204.

The spelling of 68420653 in words is "sixty-eight million, four hundred twenty thousand, six hundred fifty-three".