845281604 has 6 divisors (see below), whose sum is σ = 1479242814. Its totient is φ = 422640800.

The previous prime is 845281601. The next prime is 845281607. The reversal of 845281604 is 406182548.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (845281601) and next prime (845281607).

It can be written as a sum of positive squares in only one way, i.e., 652904704 + 192376900 = 25552^2 + 13870^2 .

It is not an unprimeable number, because it can be changed into a prime (845281601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105660197 + ... + 105660204.

It is an arithmetic number, because the mean of its divisors is an integer number (246540469).

Almost surely, 2^845281604 is an apocalyptic number.

It is an amenable number.

845281604 is a deficient number, since it is larger than the sum of its proper divisors (633961210).

845281604 is a wasteful number, since it uses less digits than its factorization.

845281604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211320405 (or 211320403 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 38.

The square root of 845281604 is about 29073.7270400614. The cubic root of 845281604 is about 945.5122048068.

The spelling of 845281604 in words is "eight hundred forty-five million, two hundred eighty-one thousand, six hundred four".