290007683621 has 4 divisors (see below), whose sum is σ = 290019330732. Its totient is φ = 289996036512.

The previous prime is 290007683597. The next prime is 290007683627. The reversal of 290007683621 is 126386700092.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 205145584900 + 84862098721 = 452930^2 + 291311^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-290007683621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290007683627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5786126 + ... + 5836031.

It is an arithmetic number, because the mean of its divisors is an integer number (72504832683).

Almost surely, 2^290007683621 is an apocalyptic number.

It is an amenable number.

290007683621 is a deficient number, since it is larger than the sum of its proper divisors (11647111).

290007683621 is a wasteful number, since it uses less digits than its factorization.

290007683621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11647110.

The product of its (nonzero) digits is 217728, while the sum is 44.

The spelling of 290007683621 in words is "two hundred ninety billion, seven million, six hundred eighty-three thousand, six hundred twenty-one".