361690 has 16 divisors (see below), whose sum is σ = 744192. Its totient is φ = 123984.

The previous prime is 361687. The next prime is 361723. The reversal of 361690 is 96163.

361690 = T₁₇₅ + T₁₇₆ + ... + T₁₉₅.

It is a super-2 number, since 2×361690² = 261639312200, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2514 + ... + 2653.

It is an arithmetic number, because the mean of its divisors is an integer number (46512).

2³⁶¹⁶⁹⁰ is an apocalyptic number.

361690 is an abundant number, since it is smaller than the sum of its proper divisors (382502).

It is a weird number, because it is abundant, but not a pseudoperfect number.

361690 is a wasteful number, since it uses less digits than its factorization.

361690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5181.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 361690 is about 601.4066843659. The cubic root of 361690 is about 71.2490099380.

The spelling of 361690 in words is "three hundred sixty-one thousand, six hundred ninety".