612655385 has 8 divisors (see below), whose sum is σ = 735413256. Its totient is φ = 489973120.

The previous prime is 612655343. The next prime is 612655397. The reversal of 612655385 is 583556216.

It can be written as a sum of positive squares in 4 ways, for example, as 337493641 + 275161744 = 18371^2 + 16588^2 .

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

It is not a de Polignac number, because 612655385 - 2¹² = 612651289 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 797 + ... + 35013.

It is an arithmetic number, because the mean of its divisors is an integer number (91926657).

Almost surely, 2^612655385 is an apocalyptic number.

It is an amenable number.

612655385 is a deficient number, since it is larger than the sum of its proper divisors (122757871).

612655385 is a wasteful number, since it uses less digits than its factorization.

612655385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37803.

The product of its digits is 216000, while the sum is 41.

The square root of 612655385 is about 24751.8763935181. The cubic root of 612655385 is about 849.3214353703.

The spelling of 612655385 in words is "six hundred twelve million, six hundred fifty-five thousand, three hundred eighty-five".