70723771 has 2 divisors, whose sum is σ = 70723772. Its totient is φ = 70723770.

The previous prime is 70723753. The next prime is 70723789. The reversal of 70723771 is 17732707.

It is a balanced prime because it is at equal distance from previous prime (70723753) and next prime (70723789).

It is an emirp because it is prime and its reverse (17732707) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70723771 - 2⁹ = 70723259 is a prime.

It is not a weakly prime, because it can be changed into another prime (70723711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35361885 + 35361886.

It is an arithmetic number, because the mean of its divisors is an integer number (35361886).

Almost surely, 2^70723771 is an apocalyptic number.

70723771 is a deficient number, since it is larger than the sum of its proper divisors (1).

70723771 is an equidigital number, since it uses as much as digits as its factorization.

70723771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14406, while the sum is 34.

The square root of 70723771 is about 8409.7426238857. The cubic root of 70723771 is about 413.5440751698.

The spelling of 70723771 in words is "seventy million, seven hundred twenty-three thousand, seven hundred seventy-one".