361669 has 18 divisors (see below), whose sum is σ = 470022. Its totient is φ = 277200.

The previous prime is 361663. The next prime is 361679. The reversal of 361669 is 966163.

It can be written as a sum of positive squares in only one way, i.e., 213444 + 148225 = 462^2 + 385^2 .

It is not a de Polignac number, because 361669 - 2⁵ = 361637 is a prime.

It is a super-2 number, since 2×361669² = 261608931122, which contains 22 as substring.

361669 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 361669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (361663) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5899 + ... + 5959.

2³⁶¹⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

361669 is a deficient number, since it is larger than the sum of its proper divisors (108353).

361669 is a wasteful number, since it uses less digits than its factorization.

361669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97 (or 79 counting only the distinct ones).

The product of its digits is 5832, while the sum is 31.

The square root of 361669 is about 601.3892250448. The cubic root of 361669 is about 71.2476309872.

The spelling of 361669 in words is "three hundred sixty-one thousand, six hundred sixty-nine".