616403247 has 8 divisors (see below), whose sum is σ = 822742656. Its totient is φ = 410499672.

The previous prime is 616403233. The next prime is 616403251. The reversal of 616403247 is 742304616.

It is a happy number.

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

It is not a de Polignac number, because 616403247 - 2¹⁰ = 616402223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616403257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105643 + ... + 111324.

It is an arithmetic number, because the mean of its divisors is an integer number (102842832).

Almost surely, 2^616403247 is an apocalyptic number.

616403247 is a deficient number, since it is larger than the sum of its proper divisors (206339409).

616403247 is a wasteful number, since it uses less digits than its factorization.

616403247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217917.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 616403247 is about 24827.4696052578. The cubic root of 616403247 is about 851.0497972566.

The spelling of 616403247 in words is "six hundred sixteen million, four hundred three thousand, two hundred forty-seven".