616501650 has 96 divisors (see below), whose sum is σ = 1588612608. Its totient is φ = 158054400.

The previous prime is 616501649. The next prime is 616501657. The reversal of 616501650 is 56105616.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (616501657) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 915714 + ... + 916386.

It is an arithmetic number, because the mean of its divisors is an integer number (16548048).

Almost surely, 2^616501650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 616501650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (794306304).

616501650 is an abundant number, since it is smaller than the sum of its proper divisors (972110958).

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

616501650 is a wasteful number, since it uses less digits than its factorization.

616501650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916 (or 911 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 616501650 is about 24829.4512625632. The cubic root of 616501650 is about 851.0950822209.

The spelling of 616501650 in words is "six hundred sixteen million, five hundred one thousand, six hundred fifty".