890675478 has 48 divisors (see below), whose sum is σ = 2405984256. Its totient is φ = 231343920.

The previous prime is 890675447. The next prime is 890675491. The reversal of 890675478 is 874576098.

890675478 is a `hidden beast` number, since 8 + 90 + 6 + 7 + 547 + 8 = 666.

It is a super-2 number, since 2×890675478² = 1586605614221056968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 319926 + ... + 322697.

It is an arithmetic number, because the mean of its divisors is an integer number (50124672).

Almost surely, 2^890675478 is an apocalyptic number.

890675478 is an abundant number, since it is smaller than the sum of its proper divisors (1515308778).

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

890675478 is a wasteful number, since it uses less digits than its factorization.

890675478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642649 (or 642646 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 54.

The square root of 890675478 is about 29844.1866701038. The cubic root of 890675478 is about 962.1434592842.

The spelling of 890675478 in words is "eight hundred ninety million, six hundred seventy-five thousand, four hundred seventy-eight".