616154420 has 72 divisors (see below), whose sum is σ = 1584444960. Its totient is φ = 200128320.

The previous prime is 616154411. The next prime is 616154431. The reversal of 616154420 is 24451616.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2075 + ... + 35165.

It is an arithmetic number, because the mean of its divisors is an integer number (22006180).

Almost surely, 2^616154420 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 616154420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (792222480).

616154420 is an abundant number, since it is smaller than the sum of its proper divisors (968290540).

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

616154420 is a wasteful number, since it uses less digits than its factorization.

616154420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33133 (or 33124 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 616154420 is about 24822.4579765985. The cubic root of 616154420 is about 850.9352658087.

The spelling of 616154420 in words is "six hundred sixteen million, one hundred fifty-four thousand, four hundred twenty".