426943661 has 16 divisors (see below), whose sum is σ = 482578560. Its totient is φ = 375298560.

The previous prime is 426943609. The next prime is 426943663. The reversal of 426943661 is 166349624.

It is a cyclic number.

It is not a de Polignac number, because 426943661 - 2²² = 422749357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426943663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13625 + ... + 32241.

It is an arithmetic number, because the mean of its divisors is an integer number (30161160).

Almost surely, 2^426943661 is an apocalyptic number.

It is an amenable number.

426943661 is a deficient number, since it is larger than the sum of its proper divisors (55634899).

426943661 is a wasteful number, since it uses less digits than its factorization.

426943661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18724.

The product of its digits is 186624, while the sum is 41.

The square root of 426943661 is about 20662.6150571509. The cubic root of 426943661 is about 752.9917013924.

The spelling of 426943661 in words is "four hundred twenty-six million, nine hundred forty-three thousand, six hundred sixty-one".