421165613 has 8 divisors (see below), whose sum is σ = 468122976. Its totient is φ = 375653200.

The previous prime is 421165583. The next prime is 421165649. The reversal of 421165613 is 316561124.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 421165613 - 2⁸ = 421165357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421165663) 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, 360623 + ... + 361788.

It is an arithmetic number, because the mean of its divisors is an integer number (58515372).

Almost surely, 2^421165613 is an apocalyptic number.

It is an amenable number.

421165613 is a deficient number, since it is larger than the sum of its proper divisors (46957363).

421165613 is a wasteful number, since it uses less digits than its factorization.

421165613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722475.

The product of its digits is 4320, while the sum is 29.

The square root of 421165613 is about 20522.3198737375. The cubic root of 421165613 is about 749.5793866752.

The spelling of 421165613 in words is "four hundred twenty-one million, one hundred sixty-five thousand, six hundred thirteen".