70644529 has 2 divisors, whose sum is σ = 70644530. Its totient is φ = 70644528.

The previous prime is 70644521. The next prime is 70644533. The reversal of 70644529 is 92544607.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57153600 + 13490929 = 7560^2 + 3673^2 .

It is an emirp because it is prime and its reverse (92544607) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70644529 - 2³ = 70644521 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (70644521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35322264 + 35322265.

It is an arithmetic number, because the mean of its divisors is an integer number (35322265).

Almost surely, 2^70644529 is an apocalyptic number.

It is an amenable number.

70644529 is a deficient number, since it is larger than the sum of its proper divisors (1).

70644529 is an equidigital number, since it uses as much as digits as its factorization.

70644529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 70644529 is about 8405.0299821000. The cubic root of 70644529 is about 413.3895665052.

The spelling of 70644529 in words is "seventy million, six hundred forty-four thousand, five hundred twenty-nine".