616522 has 8 divisors (see below), whose sum is σ = 979236. Its totient is φ = 290112.

The previous prime is 616519. The next prime is 616523. The reversal of 616522 is 225616.

It can be written as a sum of positive squares in 2 ways, for example, as 609961 + 6561 = 781^2 + 81^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 616493 and 616502.

It is not an unprimeable number, because it can be changed into a prime (616523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9033 + ... + 9100.

2⁶¹⁶⁵²² is an apocalyptic number.

616522 is a deficient number, since it is larger than the sum of its proper divisors (362714).

616522 is a wasteful number, since it uses less digits than its factorization.

616522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18152.

The product of its digits is 720, while the sum is 22.

The square root of 616522 is about 785.1891491864. The cubic root of 616522 is about 85.1104446670.

The spelling of 616522 in words is "six hundred sixteen thousand, five hundred twenty-two".