475861 has 8 divisors (see below), whose sum is σ = 502200. Its totient is φ = 450240.

The previous prime is 475859. The next prime is 475877. The reversal of 475861 is 168574.

475861 = T₂₀ + T₂₁ + ... + T₁₄₁.

It can be written as a sum of positive squares in 4 ways, for example, as 12100 + 463761 = 110^2 + 681^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 475861 - 2¹ = 475859 is a prime.

It is a Duffinian number.

475861 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (475831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1635 + ... + 1903.

It is an arithmetic number, because the mean of its divisors is an integer number (62775).

2⁴⁷⁵⁸⁶¹ is an apocalyptic number.

475861 is the 309-th centered decagonal number.

It is an amenable number.

475861 is a deficient number, since it is larger than the sum of its proper divisors (26339).

475861 is a wasteful number, since it uses less digits than its factorization.

475861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359.

The product of its digits is 6720, while the sum is 31.

The square root of 475861 is about 689.8267898538. The cubic root of 475861 is about 78.0716523265.

The spelling of 475861 in words is "four hundred seventy-five thousand, eight hundred sixty-one".