616521342 has 8 divisors (see below), whose sum is σ = 1233042696. Its totient is φ = 205507112.

The previous prime is 616521341. The next prime is 616521359. The reversal of 616521342 is 243125616.

It is a sphenic number, since it is the product of 3 distinct primes.

616521342 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616521341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51376773 + ... + 51376784.

It is an arithmetic number, because the mean of its divisors is an integer number (154130337).

Almost surely, 2^616521342 is an apocalyptic number.

616521342 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

616521342 is a wasteful number, since it uses less digits than its factorization.

616521342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102753562.

The product of its digits is 8640, while the sum is 30.

The square root of 616521342 is about 24829.8478046081. The cubic root of 616521342 is about 851.1041438814.

Adding to 616521342 its reverse (243125616), we get a palindrome (859646958).

The spelling of 616521342 in words is "six hundred sixteen million, five hundred twenty-one thousand, three hundred forty-two".