845620974 has 48 divisors (see below), whose sum is σ = 2019391920. Its totient is φ = 253601280.

The previous prime is 845620961. The next prime is 845620999. The reversal of 845620974 is 479026548.

It is a happy number.

845620974 is a `hidden beast` number, since 84 + 562 + 0 + 9 + 7 + 4 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2809 + ... + 41220.

It is an arithmetic number, because the mean of its divisors is an integer number (42070665).

Almost surely, 2^845620974 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 845620974, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1009695960).

845620974 is an abundant number, since it is smaller than the sum of its proper divisors (1173770946).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

845620974 is a wasteful number, since it uses less digits than its factorization.

845620974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44145 (or 44142 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 845620974 is about 29079.5628233988. The cubic root of 845620974 is about 945.6387249874.

The spelling of 845620974 in words is "eight hundred forty-five million, six hundred twenty thousand, nine hundred seventy-four".