361621065 has 32 divisors (see below), whose sum is σ = 650200320. Its totient is φ = 170286336.

The previous prime is 361621061. The next prime is 361621069. The reversal of 361621065 is 560126163.

It is an interprime number because it is at equal distance from previous prime (361621061) and next prime (361621069).

It is not a de Polignac number, because 361621065 - 2² = 361621061 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (361621061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35830 + ... + 44799.

It is an arithmetic number, because the mean of its divisors is an integer number (20318760).

Almost surely, 2^361621065 is an apocalyptic number.

It is an amenable number.

361621065 is a deficient number, since it is larger than the sum of its proper divisors (288579255).

361621065 is a wasteful number, since it uses less digits than its factorization.

361621065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80673.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 361621065 is about 19016.3367923478. The cubic root of 361621065 is about 712.4448316780. Note that the first 3 decimals are identical.

The spelling of 361621065 in words is "three hundred sixty-one million, six hundred twenty-one thousand, sixty-five".