616631042 has 8 divisors (see below), whose sum is σ = 929330832. Its totient is φ = 306854100.

The previous prime is 616631033. The next prime is 616631129. The reversal of 616631042 is 240136616.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 616630996 and 616631014.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 730184 + ... + 731027.

It is an arithmetic number, because the mean of its divisors is an integer number (116166354).

Almost surely, 2^616631042 is an apocalyptic number.

616631042 is a deficient number, since it is larger than the sum of its proper divisors (312699790).

616631042 is a wasteful number, since it uses less digits than its factorization.

616631042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1461424.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 616631042 is about 24832.0567412367. The cubic root of 616631042 is about 851.1546209593.

Adding to 616631042 its reverse (240136616), we get a palindrome (856767658).

The spelling of 616631042 in words is "six hundred sixteen million, six hundred thirty-one thousand, forty-two".