426217660 has 36 divisors (see below), whose sum is σ = 983828664. Its totient is φ = 154987360.

The previous prime is 426217651. The next prime is 426217661. The reversal of 426217660 is 66712624.

It is a super-2 number, since 2×426217660² = 363322987391751200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426217661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85642 + ... + 90481.

It is an arithmetic number, because the mean of its divisors is an integer number (27328574).

Almost surely, 2^426217660 is an apocalyptic number.

It is an amenable number.

426217660 is an abundant number, since it is smaller than the sum of its proper divisors (557611004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

426217660 is a wasteful number, since it uses less digits than its factorization.

426217660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176154 (or 176141 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 426217660 is about 20645.0395979276. The cubic root of 426217660 is about 752.5646482576.

The spelling of 426217660 in words is "four hundred twenty-six million, two hundred seventeen thousand, six hundred sixty".