420622666 has 8 divisors (see below), whose sum is σ = 658365984. Its totient is φ = 201167340.

The previous prime is 420622639. The next prime is 420622711. The reversal of 420622666 is 666226024.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4571940 + ... + 4572031.

It is an arithmetic number, because the mean of its divisors is an integer number (82295748).

Almost surely, 2^420622666 is an apocalyptic number.

420622666 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

420622666 is a deficient number, since it is larger than the sum of its proper divisors (237743318).

420622666 is a wasteful number, since it uses less digits than its factorization.

420622666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9143996.

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 420622666 is about 20509.0874004671. The cubic root of 420622666 is about 749.2571406043.

The spelling of 420622666 in words is "four hundred twenty million, six hundred twenty-two thousand, six hundred sixty-six".