35673821 has 2 divisors, whose sum is σ = 35673822. Its totient is φ = 35673820.

The previous prime is 35673817. The next prime is 35673863. The reversal of 35673821 is 12837653.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34351321 + 1322500 = 5861^2 + 1150^2 .

It is an emirp because it is prime and its reverse (12837653) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 35673821 - 2² = 35673817 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (35673721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17836910 + 17836911.

It is an arithmetic number, because the mean of its divisors is an integer number (17836911).

Almost surely, 2^35673821 is an apocalyptic number.

It is an amenable number.

35673821 is a deficient number, since it is larger than the sum of its proper divisors (1).

35673821 is an equidigital number, since it uses as much as digits as its factorization.

35673821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 35.

The square root of 35673821 is about 5972.7565662766. The cubic root of 35673821 is about 329.1924576776.

The spelling of 35673821 in words is "thirty-five million, six hundred seventy-three thousand, eight hundred twenty-one".