70323661 has 2 divisors, whose sum is σ = 70323662. Its totient is φ = 70323660.

The previous prime is 70323653. The next prime is 70323683. The reversal of 70323661 is 16632307.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68989636 + 1334025 = 8306^2 + 1155^2 .

It is a cyclic number.

It is not a de Polignac number, because 70323661 - 2³ = 70323653 is a prime.

It is a super-3 number, since 3×70323661³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70326661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35161830 + 35161831.

It is an arithmetic number, because the mean of its divisors is an integer number (35161831).

Almost surely, 2^70323661 is an apocalyptic number.

It is an amenable number.

70323661 is a deficient number, since it is larger than the sum of its proper divisors (1).

70323661 is an equidigital number, since it uses as much as digits as its factorization.

70323661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 70323661 is about 8385.9204026750. The cubic root of 70323661 is about 412.7627436587.

Adding to 70323661 its reverse (16632307), we get a palindrome (86955968).

The spelling of 70323661 in words is "seventy million, three hundred twenty-three thousand, six hundred sixty-one".