616635140 has 48 divisors (see below), whose sum is σ = 1419102720. Its totient is φ = 223207680.

The previous prime is 616635133. The next prime is 616635197. The reversal of 616635140 is 41536616.

It is a junction number, because it is equal to n+sod(n) for n = 616635097 and 616635106.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42776 + ... + 55344.

It is an arithmetic number, because the mean of its divisors is an integer number (29564640).

Almost surely, 2^616635140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 616635140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (709551360).

616635140 is an abundant number, since it is smaller than the sum of its proper divisors (802467580).

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

616635140 is a wasteful number, since it uses less digits than its factorization.

616635140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12812 (or 12810 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 616635140 is about 24832.1392554085. The cubic root of 616635140 is about 851.1565064866.

The spelling of 616635140 in words is "six hundred sixteen million, six hundred thirty-five thousand, one hundred forty".