361859 has 4 divisors (see below), whose sum is σ = 377616. Its totient is φ = 346104.

The previous prime is 361843. The next prime is 361871. The reversal of 361859 is 958163.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 361859 - 2⁴ = 361843 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 361859.

It is not an unprimeable number, because it can be changed into a prime (361159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7844 + ... + 7889.

It is an arithmetic number, because the mean of its divisors is an integer number (94404).

2³⁶¹⁸⁵⁹ is an apocalyptic number.

361859 is a deficient number, since it is larger than the sum of its proper divisors (15757).

361859 is a wasteful number, since it uses less digits than its factorization.

361859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15756.

The product of its digits is 6480, while the sum is 32.

The square root of 361859 is about 601.5471718826. The cubic root of 361859 is about 71.2601052662.

The spelling of 361859 in words is "three hundred sixty-one thousand, eight hundred fifty-nine".