616577545 has 16 divisors (see below), whose sum is σ = 746840448. Its totient is φ = 488649600.

The previous prime is 616577543. The next prime is 616577581. The reversal of 616577545 is 545775616.

It is a happy number.

It is not a de Polignac number, because 616577545 - 2¹ = 616577543 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 616577495 and 616577504.

It is not an unprimeable number, because it can be changed into a prime (616577543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 344142 + ... + 345928.

It is an arithmetic number, because the mean of its divisors is an integer number (46677528).

Almost surely, 2^616577545 is an apocalyptic number.

It is an amenable number.

616577545 is a deficient number, since it is larger than the sum of its proper divisors (130262903).

616577545 is a wasteful number, since it uses less digits than its factorization.

616577545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2400.

The product of its digits is 882000, while the sum is 46.

The square root of 616577545 is about 24830.9795416935. The cubic root of 616577545 is about 851.1300057343.

The spelling of 616577545 in words is "six hundred sixteen million, five hundred seventy-seven thousand, five hundred forty-five".