616351 has 4 divisors (see below), whose sum is σ = 625104. Its totient is φ = 607600.

The previous prime is 616327. The next prime is 616361. The reversal of 616351 is 153616.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 616351 - 2⁷ = 616223 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 (616321) 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 3 ways as a sum of consecutive naturals, for example, 4270 + ... + 4411.

It is an arithmetic number, because the mean of its divisors is an integer number (156276).

2⁶¹⁶³⁵¹ is an apocalyptic number.

616351 is a deficient number, since it is larger than the sum of its proper divisors (8753).

616351 is an equidigital number, since it uses as much as digits as its factorization.

616351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8752.

The product of its digits is 540, while the sum is 22.

The square root of 616351 is about 785.0802506751. The cubic root of 616351 is about 85.1025751279.

Adding to 616351 its reverse (153616), we get a palindrome (769967).

The spelling of 616351 in words is "six hundred sixteen thousand, three hundred fifty-one".