68075621 has 8 divisors (see below), whose sum is σ = 69854400. Its totient is φ = 66302560.

The previous prime is 68075611. The next prime is 68075629. The reversal of 68075621 is 12657086.

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

It is a cyclic number.

It is not a de Polignac number, because 68075621 - 2¹⁴ = 68059237 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 (68075629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33410 + ... + 35388.

It is an arithmetic number, because the mean of its divisors is an integer number (8731800).

Almost surely, 2^68075621 is an apocalyptic number.

It is an amenable number.

68075621 is a deficient number, since it is larger than the sum of its proper divisors (1778779).

68075621 is a wasteful number, since it uses less digits than its factorization.

68075621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2859.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 68075621 is about 8250.7951737999. The cubic root of 68075621 is about 408.3167574927.

The spelling of 68075621 in words is "sixty-eight million, seventy-five thousand, six hundred twenty-one".