617000891 has 16 divisors (see below), whose sum is σ = 675554880. Its totient is φ = 560079360.

The previous prime is 617000849. The next prime is 617000903. The reversal of 617000891 is 198000716.

617000891 = T₆₆ + T₆₇ + ... + T₁₅₄₆.

It is not a de Polignac number, because 617000891 - 2¹⁴ = 616984507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (617005891) 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, 415871 + ... + 417351.

It is an arithmetic number, because the mean of its divisors is an integer number (42222180).

Almost surely, 2^617000891 is an apocalyptic number.

617000891 is a deficient number, since it is larger than the sum of its proper divisors (58553989).

617000891 is a wasteful number, since it uses less digits than its factorization.

617000891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2006.

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 617000891 is about 24839.5026318966. The cubic root of 617000891 is about 851.3247582306.

The spelling of 617000891 in words is "six hundred seventeen million, eight hundred ninety-one", and thus it is an aban number.