845996481 has 28 divisors (see below), whose sum is σ = 1383738000. Its totient is φ = 512720280.

The previous prime is 845996467. The next prime is 845996513. The reversal of 845996481 is 184699548.

845996481 is a `hidden beast` number, since 8 + 4 + 599 + 6 + 48 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-845996481 is a prime.

It is a super-2 number, since 2×845996481² = 1431420091728766722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (845996581) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 44731 + ... + 60768.

Almost surely, 2^845996481 is an apocalyptic number.

845996481 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

It is an amenable number.

845996481 is a deficient number, since it is larger than the sum of its proper divisors (537741519).

845996481 is a wasteful number, since it uses less digits than its factorization.

845996481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105528 (or 105513 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 54.

The square root of 845996481 is about 29086.0186515790. The cubic root of 845996481 is about 945.7786779228.

The spelling of 845996481 in words is "eight hundred forty-five million, nine hundred ninety-six thousand, four hundred eighty-one".