426683521 has 8 divisors (see below), whose sum is σ = 466330464. Its totient is φ = 387179520.

The previous prime is 426683507. The next prime is 426683581. The reversal of 426683521 is 125386624.

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 426683521 - 2⁹ = 426683009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (426683581) 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, 29440 + ... + 41473.

It is an arithmetic number, because the mean of its divisors is an integer number (58291308).

Almost surely, 2^426683521 is an apocalyptic number.

It is an amenable number.

426683521 is a deficient number, since it is larger than the sum of its proper divisors (39646943).

426683521 is a wasteful number, since it uses less digits than its factorization.

426683521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71471.

The product of its digits is 69120, while the sum is 37.

The square root of 426683521 is about 20656.3191541959. The cubic root of 426683521 is about 752.8387358086.

The spelling of 426683521 in words is "four hundred twenty-six million, six hundred eighty-three thousand, five hundred twenty-one".