35661623 has 2 divisors, whose sum is σ = 35661624. Its totient is φ = 35661622.

The previous prime is 35661607. The next prime is 35661641. The reversal of 35661623 is 32616653.

It is a weak prime.

It is an emirp because it is prime and its reverse (32616653) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 35661623 - 2⁴ = 35661607 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 35661623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (35661643) 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, 17830811 + 17830812.

It is an arithmetic number, because the mean of its divisors is an integer number (17830812).

Almost surely, 2^35661623 is an apocalyptic number.

35661623 is a deficient number, since it is larger than the sum of its proper divisors (1).

35661623 is an equidigital number, since it uses as much as digits as its factorization.

35661623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 32.

The square root of 35661623 is about 5971.7353424277. The cubic root of 35661623 is about 329.1549329863.

The spelling of 35661623 in words is "thirty-five million, six hundred sixty-one thousand, six hundred twenty-three".