70580381 has 2 divisors, whose sum is σ = 70580382. Its totient is φ = 70580380.

The previous prime is 70580369. The next prime is 70580387. The reversal of 70580381 is 18308507.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35593156 + 34987225 = 5966^2 + 5915^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70580381 is a prime.

It is a super-2 number, since 2×70580381² = 9963180364210322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70580387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35290190 + 35290191.

It is an arithmetic number, because the mean of its divisors is an integer number (35290191).

Almost surely, 2^70580381 is an apocalyptic number.

It is an amenable number.

70580381 is a deficient number, since it is larger than the sum of its proper divisors (1).

70580381 is an equidigital number, since it uses as much as digits as its factorization.

70580381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 70580381 is about 8401.2130671707. The cubic root of 70580381 is about 413.2644039728.

Adding to 70580381 its reverse (18308507), we get a palindrome (88888888).

The spelling of 70580381 in words is "seventy million, five hundred eighty thousand, three hundred eighty-one".