70522729 has 2 divisors, whose sum is σ = 70522730. Its totient is φ = 70522728.

The previous prime is 70522679. The next prime is 70522733. The reversal of 70522729 is 92722507.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56475225 + 14047504 = 7515^2 + 3748^2 .

It is a cyclic number.

It is not a de Polignac number, because 70522729 - 2¹³ = 70514537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 70522694 and 70522703.

It is not a weakly prime, because it can be changed into another prime (70520729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35261364 + 35261365.

It is an arithmetic number, because the mean of its divisors is an integer number (35261365).

Almost surely, 2^70522729 is an apocalyptic number.

It is an amenable number.

70522729 is a deficient number, since it is larger than the sum of its proper divisors (1).

70522729 is an equidigital number, since it uses as much as digits as its factorization.

70522729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 70522729 is about 8397.7811950538. The cubic root of 70522729 is about 413.1518514044.

The spelling of 70522729 in words is "seventy million, five hundred twenty-two thousand, seven hundred twenty-nine".