616999753 has 4 divisors (see below), whose sum is σ = 633675460. Its totient is φ = 600324048.

The previous prime is 616999739. The next prime is 616999759. The reversal of 616999753 is 357999616.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 359974729 + 257025024 = 18973^2 + 16032^2 .

It is a cyclic number.

It is not a de Polignac number, because 616999753 - 2¹³ = 616991561 is a prime.

It is a super-2 number, since 2×616999753² = 761377390404122018, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 616999694 and 616999703.

It is not an unprimeable number, because it can be changed into a prime (616999759) 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, 8337798 + ... + 8337871.

It is an arithmetic number, because the mean of its divisors is an integer number (158418865).

Almost surely, 2^616999753 is an apocalyptic number.

It is an amenable number.

616999753 is a deficient number, since it is larger than the sum of its proper divisors (16675707).

616999753 is a wasteful number, since it uses less digits than its factorization.

616999753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16675706.

The product of its digits is 2755620, while the sum is 55.

The square root of 616999753 is about 24839.4797248252. The cubic root of 616999753 is about 851.3242348342.

The spelling of 616999753 in words is "six hundred sixteen million, nine hundred ninety-nine thousand, seven hundred fifty-three".