290678137 has 2 divisors, whose sum is σ = 290678138. Its totient is φ = 290678136.

The previous prime is 290678119. The next prime is 290678153. The reversal of 290678137 is 731876092.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 231526656 + 59151481 = 15216^2 + 7691^2 .

It is a cyclic number.

It is not a de Polignac number, because 290678137 - 2⁷ = 290678009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 290678093 and 290678102.

It is not a weakly prime, because it can be changed into another prime (290678197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145339068 + 145339069.

It is an arithmetic number, because the mean of its divisors is an integer number (145339069).

Almost surely, 2^290678137 is an apocalyptic number.

It is an amenable number.

290678137 is a deficient number, since it is larger than the sum of its proper divisors (1).

290678137 is an equidigital number, since it uses as much as digits as its factorization.

290678137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 290678137 is about 17049.2855275522. The cubic root of 290678137 is about 662.4261311730.

The spelling of 290678137 in words is "two hundred ninety million, six hundred seventy-eight thousand, one hundred thirty-seven".