616478193 has 12 divisors (see below), whose sum is σ = 897481728. Its totient is φ = 407748600.

The previous prime is 616478147. The next prime is 616478209. The reversal of 616478193 is 391874616.

It is a happy number.

It is not a de Polignac number, because 616478193 - 2⁶ = 616478129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (616474193) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 268533 + ... + 270818.

It is an arithmetic number, because the mean of its divisors is an integer number (74790144).

Almost surely, 2^616478193 is an apocalyptic number.

It is an amenable number.

616478193 is a deficient number, since it is larger than the sum of its proper divisors (281003535).

616478193 is a wasteful number, since it uses less digits than its factorization.

616478193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539484 (or 539481 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 616478193 is about 24828.9788956373. The cubic root of 616478193 is about 851.0842877699.

The spelling of 616478193 in words is "six hundred sixteen million, four hundred seventy-eight thousand, one hundred ninety-three".