616312545 has 16 divisors (see below), whose sum is σ = 986592192. Its totient is φ = 328536000.

The previous prime is 616312513. The next prime is 616312561. The reversal of 616312545 is 545213616.

616312545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 616312545 - 2⁵ = 616312513 is a prime.

It is a super-3 number, since 3×616312545³ (a number of 27 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24639 + ... + 42891.

It is an arithmetic number, because the mean of its divisors is an integer number (61662012).

Almost surely, 2^616312545 is an apocalyptic number.

It is an amenable number.

616312545 is a deficient number, since it is larger than the sum of its proper divisors (370279647).

616312545 is a wasteful number, since it uses less digits than its factorization.

616312545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20512.

The product of its digits is 21600, while the sum is 33.

The square root of 616312545 is about 24825.6428919776. The cubic root of 616312545 is about 851.0080520162.

The spelling of 616312545 in words is "six hundred sixteen million, three hundred twelve thousand, five hundred forty-five".