616004 has 6 divisors (see below), whose sum is σ = 1078014. Its totient is φ = 308000.

The previous prime is 616003. The next prime is 616027. The reversal of 616004 is 400616.

It can be written as a sum of positive squares in only one way, i.e., 592900 + 23104 = 770^2 + 152^2 .

It is a plaindrome in base 9.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (616003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76997 + ... + 77004.

It is an arithmetic number, because the mean of its divisors is an integer number (179669).

2⁶¹⁶⁰⁰⁴ is an apocalyptic number.

It is an amenable number.

616004 is a deficient number, since it is larger than the sum of its proper divisors (462010).

616004 is a wasteful number, since it uses less digits than its factorization.

616004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154005 (or 154003 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 616004 is about 784.8592230458. The cubic root of 616004 is about 85.0866014716.

The spelling of 616004 in words is "six hundred sixteen thousand, four".