854615649 has 32 divisors (see below), whose sum is σ = 1226880000. Its totient is φ = 527529024.

The previous prime is 854615633. The next prime is 854615681. The reversal of 854615649 is 946516458.

It is not a de Polignac number, because 854615649 - 2⁴ = 854615633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 854615598 and 854615607.

It is not an unprimeable number, because it can be changed into a prime (854615609) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 668599 + ... + 669875.

It is an arithmetic number, because the mean of its divisors is an integer number (38340000).

Almost surely, 2^854615649 is an apocalyptic number.

It is an amenable number.

854615649 is a deficient number, since it is larger than the sum of its proper divisors (372264351).

854615649 is a wasteful number, since it uses less digits than its factorization.

854615649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1557.

The product of its digits is 1036800, while the sum is 48.

The square root of 854615649 is about 29233.8100322213. The cubic root of 854615649 is about 948.9797538285.

The spelling of 854615649 in words is "eight hundred fifty-four million, six hundred fifteen thousand, six hundred forty-nine".