421067655 has 12 divisors (see below), whose sum is σ = 729850680. Its totient is φ = 224569392.

The previous prime is 421067651. The next prime is 421067681. The reversal of 421067655 is 556760124.

It is a happy number.

It is not a de Polignac number, because 421067655 - 2² = 421067651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421067651) 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, 4678485 + ... + 4678574.

It is an arithmetic number, because the mean of its divisors is an integer number (60820890).

Almost surely, 2^421067655 is an apocalyptic number.

421067655 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

421067655 is a deficient number, since it is larger than the sum of its proper divisors (308783025).

421067655 is a wasteful number, since it uses less digits than its factorization.

421067655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9357070 (or 9357067 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 421067655 is about 20519.9331139261. The cubic root of 421067655 is about 749.5212678190.

The spelling of 421067655 in words is "four hundred twenty-one million, sixty-seven thousand, six hundred fifty-five".