426366661 has 4 divisors (see below), whose sum is σ = 487276192. Its totient is φ = 365457132.

The previous prime is 426366643. The next prime is 426366673. The reversal of 426366661 is 166663624.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 426366661 - 2⁷ = 426366533 is a prime.

It is a super-2 number, since 2×426366661² = 363577059224577842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426366691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30454755 + ... + 30454768.

It is an arithmetic number, because the mean of its divisors is an integer number (121819048).

Almost surely, 2^426366661 is an apocalyptic number.

It is an amenable number.

426366661 is a deficient number, since it is larger than the sum of its proper divisors (60909531).

426366661 is an equidigital number, since it uses as much as digits as its factorization.

426366661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60909530.

The product of its digits is 186624, while the sum is 40.

The square root of 426366661 is about 20648.6479218374. The cubic root of 426366661 is about 752.6523341447.

The spelling of 426366661 in words is "four hundred twenty-six million, three hundred sixty-six thousand, six hundred sixty-one".