427144666 has 16 divisors (see below), whose sum is σ = 690344928. Its totient is φ = 197046000.

The previous prime is 427144651. The next prime is 427144667. The reversal of 427144666 is 666441724.

It is not an unprimeable number, because it can be changed into a prime (427144667) 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, 93741 + ... + 98191.

It is an arithmetic number, because the mean of its divisors is an integer number (43146558).

Almost surely, 2^427144666 is an apocalyptic number.

427144666 is a deficient number, since it is larger than the sum of its proper divisors (263200262).

427144666 is a wasteful number, since it uses less digits than its factorization.

427144666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8157.

The product of its digits is 193536, while the sum is 40.

The square root of 427144666 is about 20667.4784625508. The cubic root of 427144666 is about 753.1098523058.

The spelling of 427144666 in words is "four hundred twenty-seven million, one hundred forty-four thousand, six hundred sixty-six".