290682681 has 8 divisors (see below), whose sum is σ = 388824384. Its totient is φ = 193164720.

The previous prime is 290682647. The next prime is 290682697. The reversal of 290682681 is 186286092.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 290682681 - 2²⁷ = 156464953 is a prime.

It is a super-2 number, since 2×290682681² = 168992842066695522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (290682641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154846 + ... + 156711.

It is an arithmetic number, because the mean of its divisors is an integer number (48603048).

Almost surely, 2^290682681 is an apocalyptic number.

It is an amenable number.

290682681 is a deficient number, since it is larger than the sum of its proper divisors (98141703).

290682681 is a wasteful number, since it uses less digits than its factorization.

290682681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311871.

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 290682681 is about 17049.4187877476. The cubic root of 290682681 is about 662.4295829274.

The spelling of 290682681 in words is "two hundred ninety million, six hundred eighty-two thousand, six hundred eighty-one".