73651 has 2 divisors, whose sum is σ = 73652. Its totient is φ = 73650.

The previous prime is 73643. The next prime is 73673. The reversal of 73651 is 15637.

It is an a-pointer prime, because the next prime (73673) can be obtained adding 73651 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 73651 - 2³ = 73643 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (73681) 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, 36825 + 36826.

It is an arithmetic number, because the mean of its divisors is an integer number (36826).

2⁷³⁶⁵¹ is an apocalyptic number.

73651 is a deficient number, since it is larger than the sum of its proper divisors (1).

73651 is an equidigital number, since it uses as much as digits as its factorization.

73651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 630, while the sum is 22.

The square root of 73651 is about 271.3871772947. The cubic root of 73651 is about 41.9172596324.

It can be divided in two parts, 736 and 51, that added together give a palindrome (787).

The spelling of 73651 in words is "seventy-three thousand, six hundred fifty-one".