612347421 has 8 divisors (see below), whose sum is σ = 933100864. Its totient is φ = 349912800.

The previous prime is 612347387. The next prime is 612347509. The reversal of 612347421 is 124743216.

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

It is a de Polignac number, because none of the positive numbers 2^k-612347421 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 (612347321) 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, 14579680 + ... + 14579721.

It is an arithmetic number, because the mean of its divisors is an integer number (116637608).

Almost surely, 2^612347421 is an apocalyptic number.

It is an amenable number.

612347421 is a deficient number, since it is larger than the sum of its proper divisors (320753443).

612347421 is a wasteful number, since it uses less digits than its factorization.

612347421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29159411.

The product of its digits is 8064, while the sum is 30.

The square root of 612347421 is about 24745.6545882302. The cubic root of 612347421 is about 849.1791018108.

The spelling of 612347421 in words is "six hundred twelve million, three hundred forty-seven thousand, four hundred twenty-one".