616390255 has 8 divisors (see below), whose sum is σ = 796565952. Its totient is φ = 455180448.

The previous prime is 616390231. The next prime is 616390279. The reversal of 616390255 is 552093616.

It is an interprime number because it is at equal distance from previous prime (616390231) and next prime (616390279).

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 616390255 - 2¹⁷ = 616259183 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4741399 + ... + 4741528.

It is an arithmetic number, because the mean of its divisors is an integer number (99570744).

Almost surely, 2^616390255 is an apocalyptic number.

616390255 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

616390255 is a deficient number, since it is larger than the sum of its proper divisors (180175697).

616390255 is a wasteful number, since it uses less digits than its factorization.

616390255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9482945.

The product of its (nonzero) digits is 48600, while the sum is 37.

The square root of 616390255 is about 24827.2079582059. The cubic root of 616390255 is about 851.0438179907.

The spelling of 616390255 in words is "six hundred sixteen million, three hundred ninety thousand, two hundred fifty-five".