616288477 has 4 divisors (see below), whose sum is σ = 704329696. Its totient is φ = 528247260.

The previous prime is 616288459. The next prime is 616288481. The reversal of 616288477 is 774882616.

It is a happy number.

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 616288477 - 2⁷ = 616288349 is a prime.

It is a super-2 number, since 2×616288477² = 759622973765959058, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 616288477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616288457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44020599 + ... + 44020612.

It is an arithmetic number, because the mean of its divisors is an integer number (176082424).

Almost surely, 2^616288477 is an apocalyptic number.

It is an amenable number.

616288477 is a deficient number, since it is larger than the sum of its proper divisors (88041219).

616288477 is an equidigital number, since it uses as much as digits as its factorization.

616288477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88041218.

The product of its digits is 903168, while the sum is 49.

The square root of 616288477 is about 24825.1581465255. The cubic root of 616288477 is about 850.9969741258.

The spelling of 616288477 in words is "six hundred sixteen million, two hundred eighty-eight thousand, four hundred seventy-seven".