35673721 has 2 divisors, whose sum is σ = 35673722. Its totient is φ = 35673720.

The previous prime is 35673719. The next prime is 35673727. The reversal of 35673721 is 12737653.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30085225 + 5588496 = 5485^2 + 2364^2 .

It is a cyclic number.

It is not a de Polignac number, because 35673721 - 2¹ = 35673719 is a prime.

It is a super-2 number, since 2×35673721² = 2545228739971682, which contains 22 as substring.

Together with 35673719, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (35673727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17836860 + 17836861.

It is an arithmetic number, because the mean of its divisors is an integer number (17836861).

Almost surely, 2^35673721 is an apocalyptic number.

It is an amenable number.

35673721 is a deficient number, since it is larger than the sum of its proper divisors (1).

35673721 is an equidigital number, since it uses as much as digits as its factorization.

35673721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26460, while the sum is 34.

The square root of 35673721 is about 5972.7481949267. The cubic root of 35673721 is about 329.1921500825.

The spelling of 35673721 in words is "thirty-five million, six hundred seventy-three thousand, seven hundred twenty-one".