616213140 has 48 divisors (see below), whose sum is σ = 1727803392. Its totient is φ = 164094336.

The previous prime is 616213121. The next prime is 616213153. The reversal of 616213140 is 41312616.

It is a self number, because there is not a number n which added to its sum of digits gives 616213140.

It is a congruent number.

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, 38637 + ... + 52203.

It is an arithmetic number, because the mean of its divisors is an integer number (35995904).

Almost surely, 2^616213140 is an apocalyptic number.

616213140 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

616213140 is an abundant number, since it is smaller than the sum of its proper divisors (1111590252).

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

616213140 is a wasteful number, since it uses less digits than its factorization.

616213140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14336 (or 14334 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 616213140 is about 24823.6407482867. The cubic root of 616213140 is about 850.9622965497.

Adding to 616213140 its reverse (41312616), we get a palindrome (657525756).

The spelling of 616213140 in words is "six hundred sixteen million, two hundred thirteen thousand, one hundred forty".