616771650 has 96 divisors (see below), whose sum is σ = 1685624256. Its totient is φ = 148000000.

The previous prime is 616771637. The next prime is 616771697. The reversal of 616771650 is 56177616.

It is a junction number, because it is equal to n+sod(n) for n = 616771599 and 616771608.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 164800 + ... + 168500.

It is an arithmetic number, because the mean of its divisors is an integer number (17558586).

Almost surely, 2^616771650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 616771650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (842812128).

616771650 is an abundant number, since it is smaller than the sum of its proper divisors (1068852606).

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

616771650 is a wasteful number, since it uses less digits than its factorization.

616771650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3828 (or 3823 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 616771650 is about 24834.8877589572. The cubic root of 616771650 is about 851.2193112118.

The spelling of 616771650 in words is "six hundred sixteen million, seven hundred seventy-one thousand, six hundred fifty".