616870128 has 40 divisors (see below), whose sum is σ = 1821236608. Its totient is φ = 176248512.

The previous prime is 616870117. The next prime is 616870129. The reversal of 616870128 is 821078616.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616870129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 917626 + ... + 918297.

Almost surely, 2^616870128 is an apocalyptic number.

It is an amenable number.

616870128 is an abundant number, since it is smaller than the sum of its proper divisors (1204366480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

616870128 is a wasteful number, since it uses less digits than its factorization.

616870128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1835941 (or 1835935 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 616870128 is about 24836.8703342430. The cubic root of 616870128 is about 851.2646126424.

The spelling of 616870128 in words is "six hundred sixteen million, eight hundred seventy thousand, one hundred twenty-eight".