70534661 has 2 divisors, whose sum is σ = 70534662. Its totient is φ = 70534660.

The previous prime is 70534643. The next prime is 70534687. The reversal of 70534661 is 16643507.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63904036 + 6630625 = 7994^2 + 2575^2 .

It is an emirp because it is prime and its reverse (16643507) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70534661 - 2²⁶ = 3425797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70534601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35267330 + 35267331.

It is an arithmetic number, because the mean of its divisors is an integer number (35267331).

Almost surely, 2^70534661 is an apocalyptic number.

It is an amenable number.

70534661 is a deficient number, since it is larger than the sum of its proper divisors (1).

70534661 is an equidigital number, since it uses as much as digits as its factorization.

70534661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 70534661 is about 8398.4915907560. The cubic root of 70534661 is about 413.1751509844.

The spelling of 70534661 in words is "seventy million, five hundred thirty-four thousand, six hundred sixty-one".