70373609 has 2 divisors, whose sum is σ = 70373610. Its totient is φ = 70373608.

The previous prime is 70373603. The next prime is 70373707. The reversal of 70373609 is 90637307.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66373609 + 4000000 = 8147^2 + 2000^2 .

It is an emirp because it is prime and its reverse (90637307) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70373609 is a prime.

It is not a weakly prime, because it can be changed into another prime (70373603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35186804 + 35186805.

It is an arithmetic number, because the mean of its divisors is an integer number (35186805).

Almost surely, 2^70373609 is an apocalyptic number.

It is an amenable number.

70373609 is a deficient number, since it is larger than the sum of its proper divisors (1).

70373609 is an equidigital number, since it uses as much as digits as its factorization.

70373609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23814, while the sum is 35.

The square root of 70373609 is about 8388.8979609958. The cubic root of 70373609 is about 412.8604433238.

The spelling of 70373609 in words is "seventy million, three hundred seventy-three thousand, six hundred nine".