70776913 has 2 divisors, whose sum is σ = 70776914. Its totient is φ = 70776912.

The previous prime is 70776887. The next prime is 70776949. The reversal of 70776913 is 31967707.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48052624 + 22724289 = 6932^2 + 4767^2 .

It is a cyclic number.

It is not a de Polignac number, because 70776913 - 2⁹ = 70776401 is a prime.

It is not a weakly prime, because it can be changed into another prime (70776413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35388456 + 35388457.

It is an arithmetic number, because the mean of its divisors is an integer number (35388457).

Almost surely, 2^70776913 is an apocalyptic number.

It is an amenable number.

70776913 is a deficient number, since it is larger than the sum of its proper divisors (1).

70776913 is an equidigital number, since it uses as much as digits as its factorization.

70776913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55566, while the sum is 40.

The square root of 70776913 is about 8412.9015803110. The cubic root of 70776913 is about 413.6476285523.

The spelling of 70776913 in words is "seventy million, seven hundred seventy-six thousand, nine hundred thirteen".