74953709 has 2 divisors, whose sum is σ = 74953710. Its totient is φ = 74953708.

The previous prime is 74953667. The next prime is 74953721. The reversal of 74953709 is 90735947.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49420900 + 25532809 = 7030^2 + 5053^2 .

It is a cyclic number.

It is not a de Polignac number, because 74953709 - 2¹² = 74949613 is a prime.

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 74953709.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74953759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37476854 + 37476855.

It is an arithmetic number, because the mean of its divisors is an integer number (37476855).

Almost surely, 2^74953709 is an apocalyptic number.

It is an amenable number.

74953709 is a deficient number, since it is larger than the sum of its proper divisors (1).

74953709 is an equidigital number, since it uses as much as digits as its factorization.

74953709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 238140, while the sum is 44.

The square root of 74953709 is about 8657.5810131930. The cubic root of 74953709 is about 421.6295518132.

The spelling of 74953709 in words is "seventy-four million, nine hundred fifty-three thousand, seven hundred nine".