68057621 has 8 divisors (see below), whose sum is σ = 72221760. Its totient is φ = 63993952.

The previous prime is 68057609. The next prime is 68057623. The reversal of 68057621 is 12675086.

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 68057621 - 2⁶ = 68057557 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 (68057623) 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, 23720 + ... + 26433.

It is an arithmetic number, because the mean of its divisors is an integer number (9027720).

Almost surely, 2^68057621 is an apocalyptic number.

It is an amenable number.

68057621 is a deficient number, since it is larger than the sum of its proper divisors (4164139).

68057621 is a wasteful number, since it uses less digits than its factorization.

68057621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50235.

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

The square root of 68057621 is about 8249.7042977309. The cubic root of 68057621 is about 408.2807663924.

The spelling of 68057621 in words is "sixty-eight million, fifty-seven thousand, six hundred twenty-one".