290100681 has 12 divisors (see below), whose sum is σ = 451267908. Its totient is φ = 178523424.

The previous prime is 290100677. The next prime is 290100703. The reversal of 290100681 is 186001092.

It can be written as a sum of positive squares in 2 ways, for example, as 105575625 + 184525056 = 10275^2 + 13584^2 .

It is not a de Polignac number, because 290100681 - 2² = 290100677 is a prime.

It is a super-2 number, since 2×290100681² = 168316810233327522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (290100281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1239630 + ... + 1239863.

It is an arithmetic number, because the mean of its divisors is an integer number (37605659).

Almost surely, 2^290100681 is an apocalyptic number.

It is an amenable number.

290100681 is a deficient number, since it is larger than the sum of its proper divisors (161167227).

290100681 is a wasteful number, since it uses less digits than its factorization.

290100681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2479512 (or 2479509 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 290100681 is about 17032.3422053457. The cubic root of 290100681 is about 661.9871857336.

The spelling of 290100681 in words is "two hundred ninety million, one hundred thousand, six hundred eighty-one".