616373940 has 144 divisors (see below), whose sum is σ = 2162184192. Its totient is φ = 130040064.

The previous prime is 616373929. The next prime is 616373971. The reversal of 616373940 is 49373616.

It is a super-2 number, since 2×616373940² = 759833667822247200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

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, 30157 + ... + 46283.

It is an arithmetic number, because the mean of its divisors is an integer number (15015168).

Almost surely, 2^616373940 is an apocalyptic number.

616373940 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 616373940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1081092096).

616373940 is an abundant number, since it is smaller than the sum of its proper divisors (1545810252).

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

616373940 is a wasteful number, since it uses less digits than its factorization.

616373940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16166 (or 16157 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 39.

The square root of 616373940 is about 24826.8793850536. The cubic root of 616373940 is about 851.0363092724.

The spelling of 616373940 in words is "six hundred sixteen million, three hundred seventy-three thousand, nine hundred forty".