361665340 has 48 divisors (see below), whose sum is σ = 805573440. Its totient is φ = 136097280.

The previous prime is 361665319. The next prime is 361665347. The reversal of 361665340 is 43566163.

It is a junction number, because it is equal to n+sod(n) for n = 361665296 and 361665305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (361665347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21616 + ... + 34504.

It is an arithmetic number, because the mean of its divisors is an integer number (16782780).

Almost surely, 2^361665340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 361665340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (402786720).

361665340 is an abundant number, since it is smaller than the sum of its proper divisors (443908100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

361665340 is a wasteful number, since it uses less digits than its factorization.

361665340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12982 (or 12980 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 34.

The square root of 361665340 is about 19017.5008873406. The cubic root of 361665340 is about 712.4739065031.

The spelling of 361665340 in words is "three hundred sixty-one million, six hundred sixty-five thousand, three hundred forty".