201646730 has 16 divisors (see below), whose sum is σ = 366296040. Its totient is φ = 79918272.

The previous prime is 201646703. The next prime is 201646747. The reversal of 201646730 is 37646102.

201646730 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 127531849 + 74114881 = 11293^2 + 8609^2 .

It is a super-2 number, since 2×201646730² = 81322807439385800, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 201646693 and 201646702.

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, 91409 + ... + 93588.

Almost surely, 2^201646730 is an apocalyptic number.

201646730 is a deficient number, since it is larger than the sum of its proper divisors (164649310).

201646730 is a wasteful number, since it uses less digits than its factorization.

201646730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185113.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 201646730 is about 14200.2369698537. The cubic root of 201646730 is about 586.4041851945.

The spelling of 201646730 in words is "two hundred one million, six hundred forty-six thousand, seven hundred thirty".