854890707609 has 27 divisors (see below), whose sum is σ = 1240076791317. Its totient is φ = 567521321400.

The previous prime is 854890707607. The next prime is 854890707617. The reversal of 854890707609 is 906707098458.

The square root of 854890707609 is 924603.

It is a perfect power (a square), and thus also a powerful number.

854890707609 is a `hidden beast` number, since 85 + 489 + 0 + 7 + 0 + 76 + 0 + 9 = 666.

It is not a de Polignac number, because 854890707609 - 2¹ = 854890707607 is a prime.

It is not an unprimeable number, because it can be changed into a prime (854890707607) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 862654104 + ... + 862655094.

Almost surely, 2^854890707609 is an apocalyptic number.

854890707609 is the 924603-rd square number.

854890707609 is the 462302-nd centered octagonal number.

It is an amenable number.

854890707609 is a deficient number, since it is larger than the sum of its proper divisors (385186083708).

854890707609 is an frugal number, since it uses more digits than its factorization.

854890707609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2610 (or 1305 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 63.

The spelling of 854890707609 in words is "eight hundred fifty-four billion, eight hundred ninety million, seven hundred seven thousand, six hundred nine".