74718653 has 2 divisors, whose sum is σ = 74718654. Its totient is φ = 74718652.

The previous prime is 74718647. The next prime is 74718667. The reversal of 74718653 is 35681747.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51079609 + 23639044 = 7147^2 + 4862^2 .

It is an emirp because it is prime and its reverse (35681747) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74718653 - 2¹⁸ = 74456509 is a prime.

It is a super-2 number, since 2×74718653² = 11165754212268818, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 74718653.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74718613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37359326 + 37359327.

It is an arithmetic number, because the mean of its divisors is an integer number (37359327).

Almost surely, 2^74718653 is an apocalyptic number.

It is an amenable number.

74718653 is a deficient number, since it is larger than the sum of its proper divisors (1).

74718653 is an equidigital number, since it uses as much as digits as its factorization.

74718653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141120, while the sum is 41.

The square root of 74718653 is about 8643.9951989806. The cubic root of 74718653 is about 421.1883446645.

The spelling of 74718653 in words is "seventy-four million, seven hundred eighteen thousand, six hundred fifty-three".