36609971 has 2 divisors, whose sum is σ = 36609972. Its totient is φ = 36609970.

The previous prime is 36609967. The next prime is 36609973. The reversal of 36609971 is 17990663.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 36609971 - 2² = 36609967 is a prime.

Together with 36609973, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (36609973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18304985 + 18304986.

It is an arithmetic number, because the mean of its divisors is an integer number (18304986).

Almost surely, 2^36609971 is an apocalyptic number.

36609971 is a deficient number, since it is larger than the sum of its proper divisors (1).

36609971 is an equidigital number, since it uses as much as digits as its factorization.

36609971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 36609971 is about 6050.6174065132. The cubic root of 36609971 is about 332.0471790262.

It can be divided in two parts, 3660 and 9971, that added together give a palindrome (13631).

The spelling of 36609971 in words is "thirty-six million, six hundred nine thousand, nine hundred seventy-one".