421356606 has 24 divisors (see below), whose sum is σ = 926289672. Its totient is φ = 127683600.

The previous prime is 421356601. The next prime is 421356641. The reversal of 421356606 is 606653124.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421356601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 289465 + ... + 290916.

It is an arithmetic number, because the mean of its divisors is an integer number (38595403).

Almost surely, 2^421356606 is an apocalyptic number.

421356606 is an abundant number, since it is smaller than the sum of its proper divisors (504933066).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421356606 is a wasteful number, since it uses less digits than its factorization.

421356606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580408 (or 580397 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 421356606 is about 20526.9726457654. The cubic root of 421356606 is about 749.6926776434.

The spelling of 421356606 in words is "four hundred twenty-one million, three hundred fifty-six thousand, six hundred six".