36770021 has 2 divisors, whose sum is σ = 36770022. Its totient is φ = 36770020.

The previous prime is 36770017. The next prime is 36770023. The reversal of 36770021 is 12007763.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21669025 + 15100996 = 4655^2 + 3886^2 .

It is a cyclic number.

It is not a de Polignac number, because 36770021 - 2² = 36770017 is a prime.

It is a super-3 number, since 3×36770021³ (a number of 24 digits) contains 333 as substring.

Together with 36770023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36770023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18385010 + 18385011.

It is an arithmetic number, because the mean of its divisors is an integer number (18385011).

Almost surely, 2^36770021 is an apocalyptic number.

It is an amenable number.

36770021 is a deficient number, since it is larger than the sum of its proper divisors (1).

36770021 is an equidigital number, since it uses as much as digits as its factorization.

36770021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1764, while the sum is 26.

The square root of 36770021 is about 6063.8289058977. The cubic root of 36770021 is about 332.5303524405.

Adding to 36770021 its reverse (12007763), we get a palindrome (48777784).

The spelling of 36770021 in words is "thirty-six million, seven hundred seventy thousand, twenty-one".