426661406 has 8 divisors (see below), whose sum is σ = 640125504. Its totient is φ = 213286240.

The previous prime is 426661381. The next prime is 426661439. The reversal of 426661406 is 604166624.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8555 + ... + 30438.

It is an arithmetic number, because the mean of its divisors is an integer number (80015688).

Almost surely, 2^426661406 is an apocalyptic number.

426661406 is a deficient number, since it is larger than the sum of its proper divisors (213464098).

426661406 is a wasteful number, since it uses less digits than its factorization.

426661406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44466.

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 426661406 is about 20655.7838389154. The cubic root of 426661406 is about 752.8257290441.

The spelling of 426661406 in words is "four hundred twenty-six million, six hundred sixty-one thousand, four hundred six".