4645890 has 32 divisors (see below), whose sum is σ = 12389760. Its totient is φ = 1238832.

The previous prime is 4645873. The next prime is 4645891. The reversal of 4645890 is 985464.

4645890 is a `hidden beast` number, since 4 + 645 + 8 + 9 + 0 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4645891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8334 + ... + 8873.

It is an arithmetic number, because the mean of its divisors is an integer number (387180).

Almost surely, 2^4645890 is an apocalyptic number.

4645890 is an abundant number, since it is smaller than the sum of its proper divisors (7743870).

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

4645890 is a wasteful number, since it uses less digits than its factorization.

4645890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17223 (or 17217 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 4645890 is about 2155.4326711823. The cubic root of 4645890 is about 166.8615631145.

The spelling of 4645890 in words is "four million, six hundred forty-five thousand, eight hundred ninety".