616697445 has 32 divisors (see below), whose sum is σ = 1214422272. Its totient is φ = 260232192.

The previous prime is 616697437. The next prime is 616697447. The reversal of 616697445 is 544796616.

It is not a de Polignac number, because 616697445 - 2³ = 616697437 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 616697394 and 616697403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616697447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 224532 + ... + 227261.

It is an arithmetic number, because the mean of its divisors is an integer number (37950696).

Almost surely, 2^616697445 is an apocalyptic number.

616697445 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

616697445 is a deficient number, since it is larger than the sum of its proper divisors (597724827).

616697445 is a wasteful number, since it uses less digits than its factorization.

616697445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451821.

The product of its digits is 1088640, while the sum is 48.

The square root of 616697445 is about 24833.3937471301. The cubic root of 616697445 is about 851.1851725576.

The spelling of 616697445 in words is "six hundred sixteen million, six hundred ninety-seven thousand, four hundred forty-five".