612654438 has 16 divisors (see below), whose sum is σ = 1336700736. Its totient is φ = 185652840.

The previous prime is 612654433. The next prime is 612654443. The reversal of 612654438 is 834456216.

It is an interprime number because it is at equal distance from previous prime (612654433) and next prime (612654443).

It is a junction number, because it is equal to n+sod(n) for n = 612654396 and 612654405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612654433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4641256 + ... + 4641387.

It is an arithmetic number, because the mean of its divisors is an integer number (83543796).

Almost surely, 2^612654438 is an apocalyptic number.

612654438 is an abundant number, since it is smaller than the sum of its proper divisors (724046298).

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

612654438 is a wasteful number, since it uses less digits than its factorization.

612654438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9282659.

The product of its digits is 138240, while the sum is 39.

The square root of 612654438 is about 24751.8572636479. The cubic root of 612654438 is about 849.3209977627.

It can be divided in two parts, 61265 and 4438, that added together give a triangular number (65703 = T₃₆₂).

The spelling of 612654438 in words is "six hundred twelve million, six hundred fifty-four thousand, four hundred thirty-eight".