70753409 has 2 divisors, whose sum is σ = 70753410. Its totient is φ = 70753408.

The previous prime is 70753387. The next prime is 70753453. The reversal of 70753409 is 90435707.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58186384 + 12567025 = 7628^2 + 3545^2 .

It is an emirp because it is prime and its reverse (90435707) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70753409 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (70753469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35376704 + 35376705.

It is an arithmetic number, because the mean of its divisors is an integer number (35376705).

Almost surely, 2^70753409 is an apocalyptic number.

It is an amenable number.

70753409 is a deficient number, since it is larger than the sum of its proper divisors (1).

70753409 is an equidigital number, since it uses as much as digits as its factorization.

70753409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 70753409 is about 8411.5045622053. The cubic root of 70753409 is about 413.6018346633.

The spelling of 70753409 in words is "seventy million, seven hundred fifty-three thousand, four hundred nine".