612421806 has 32 divisors (see below), whose sum is σ = 1239079680. Its totient is φ = 201778304.

The previous prime is 612421801. The next prime is 612421811. The reversal of 612421806 is 608124216.

It is an interprime number because it is at equal distance from previous prime (612421801) and next prime (612421811).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612421801) 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 15 ways as a sum of consecutive naturals, for example, 299335 + ... + 301373.

It is an arithmetic number, because the mean of its divisors is an integer number (38721240).

Almost surely, 2^612421806 is an apocalyptic number.

612421806 is an abundant number, since it is smaller than the sum of its proper divisors (626657874).

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

612421806 is a wasteful number, since it uses less digits than its factorization.

612421806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2600.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 612421806 is about 24747.1575337452. The cubic root of 612421806 is about 849.2134851406.

The spelling of 612421806 in words is "six hundred twelve million, four hundred twenty-one thousand, eight hundred six".