616648 has 8 divisors (see below), whose sum is σ = 1156230. Its totient is φ = 308320.

The previous prime is 616643. The next prime is 616669. The reversal of 616648 is 846616.

It can be written as a sum of positive squares in only one way, i.e., 515524 + 101124 = 718^2 + 318^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (616643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38533 + ... + 38548.

2⁶¹⁶⁶⁴⁸ is an apocalyptic number.

It is an amenable number.

616648 is a deficient number, since it is larger than the sum of its proper divisors (539582).

616648 is a wasteful number, since it uses less digits than its factorization.

616648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77087 (or 77083 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The square root of 616648 is about 785.2693805313. The cubic root of 616648 is about 85.1162423436.

The spelling of 616648 in words is "six hundred sixteen thousand, six hundred forty-eight".