616975393 has 4 divisors (see below), whose sum is σ = 619557120. Its totient is φ = 614393668.

The previous prime is 616975351. The next prime is 616975397. The reversal of 616975393 is 393579616.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 616975393 - 2¹³ = 616967201 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616975397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1290505 + ... + 1290982.

It is an arithmetic number, because the mean of its divisors is an integer number (154889280).

Almost surely, 2^616975393 is an apocalyptic number.

It is an amenable number.

616975393 is a deficient number, since it is larger than the sum of its proper divisors (2581727).

616975393 is a wasteful number, since it uses less digits than its factorization.

616975393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2581726.

The product of its digits is 918540, while the sum is 49.

The square root of 616975393 is about 24838.9893715505. The cubic root of 616975393 is about 851.3130308690.

The spelling of 616975393 in words is "six hundred sixteen million, nine hundred seventy-five thousand, three hundred ninety-three".