366190721 has 18 divisors (see below), whose sum is σ = 406748610. Its totient is φ = 329521920.

The previous prime is 366190697. The next prime is 366190723. The reversal of 366190721 is 127091663.

It can be written as a sum of positive squares in 9 ways, for example, as 312900721 + 53290000 = 17689^2 + 7300^2 .

It is a de Polignac number, because none of the positive numbers 2^k-366190721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (366190723) 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, 283445 + ... + 284733.

It is an arithmetic number, because the mean of its divisors is an integer number (22597145).

Almost surely, 2^366190721 is an apocalyptic number.

It is an amenable number.

366190721 is a deficient number, since it is larger than the sum of its proper divisors (40557889).

366190721 is a wasteful number, since it uses less digits than its factorization.

366190721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397 (or 1343 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 366190721 is about 19136.1103937033. The cubic root of 366190721 is about 715.4332360612.

The spelling of 366190721 in words is "three hundred sixty-six million, one hundred ninety thousand, seven hundred twenty-one".