612663421 has 8 divisors (see below), whose sum is σ = 620867520. Its totient is φ = 604479072.

The previous prime is 612663419. The next prime is 612663431. The reversal of 612663421 is 124366216.

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 612663421 - 2¹ = 612663419 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 (612663431) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 63825 + ... + 72793.

It is an arithmetic number, because the mean of its divisors is an integer number (77608440).

Almost surely, 2^612663421 is an apocalyptic number.

It is an amenable number.

612663421 is a deficient number, since it is larger than the sum of its proper divisors (8204099).

612663421 is an equidigital number, since it uses as much as digits as its factorization.

612663421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9875.

The product of its digits is 10368, while the sum is 31.

The square root of 612663421 is about 24752.0387241132. The cubic root of 612663421 is about 849.3251487777.

The spelling of 612663421 in words is "six hundred twelve million, six hundred sixty-three thousand, four hundred twenty-one".