616478503 has 8 divisors (see below), whose sum is σ = 657815600. Its totient is φ = 576030528.

The previous prime is 616478479. The next prime is 616478507. The reversal of 616478503 is 305874616.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-616478503 is a prime.

It is a super-2 number, since 2×616478503² = 760091489322242018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616478507) 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, 220848 + ... + 223621.

It is an arithmetic number, because the mean of its divisors is an integer number (82226950).

Almost surely, 2^616478503 is an apocalyptic number.

616478503 is a deficient number, since it is larger than the sum of its proper divisors (41337097).

616478503 is a wasteful number, since it uses less digits than its factorization.

616478503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444561.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 616478503 is about 24828.9851383418. The cubic root of 616478503 is about 851.0844304276.

The spelling of 616478503 in words is "six hundred sixteen million, four hundred seventy-eight thousand, five hundred three".