290290065 has 16 divisors (see below), whose sum is σ = 500192448. Its totient is φ = 142911936.

The previous prime is 290289991. The next prime is 290290069. The reversal of 290290065 is 560092092.

It is not a de Polignac number, because 290290065 - 2²³ = 281901457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (290290069) 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, 744139 + ... + 744528.

It is an arithmetic number, because the mean of its divisors is an integer number (31262028).

Almost surely, 2^290290065 is an apocalyptic number.

It is an amenable number.

290290065 is a deficient number, since it is larger than the sum of its proper divisors (209902383).

290290065 is a wasteful number, since it uses less digits than its factorization.

290290065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1488688.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 290290065 is about 17037.9008390118. The cubic root of 290290065 is about 662.1312075829.

The spelling of 290290065 in words is "two hundred ninety million, two hundred ninety thousand, sixty-five".