70884661 has 2 divisors, whose sum is σ = 70884662. Its totient is φ = 70884660.

The previous prime is 70884641. The next prime is 70884707. The reversal of 70884661 is 16648807.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60606225 + 10278436 = 7785^2 + 3206^2 .

It is a cyclic number.

It is not a de Polignac number, because 70884661 - 2⁵ = 70884629 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70884641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35442330 + 35442331.

It is an arithmetic number, because the mean of its divisors is an integer number (35442331).

Almost surely, 2^70884661 is an apocalyptic number.

It is an amenable number.

70884661 is a deficient number, since it is larger than the sum of its proper divisors (1).

70884661 is an equidigital number, since it uses as much as digits as its factorization.

70884661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 70884661 is about 8419.3028808803. The cubic root of 70884661 is about 413.8574291065.

The spelling of 70884661 in words is "seventy million, eight hundred eighty-four thousand, six hundred sixty-one".