70823471 has 2 divisors, whose sum is σ = 70823472. Its totient is φ = 70823470.

The previous prime is 70823461. The next prime is 70823477. The reversal of 70823471 is 17432807.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70823471 is a prime.

It is a super-3 number, since 3×70823471³ (a number of 25 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70823477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35411735 + 35411736.

It is an arithmetic number, because the mean of its divisors is an integer number (35411736).

Almost surely, 2^70823471 is an apocalyptic number.

70823471 is a deficient number, since it is larger than the sum of its proper divisors (1).

70823471 is an equidigital number, since it uses as much as digits as its factorization.

70823471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 70823471 is about 8415.6681849987. The cubic root of 70823471 is about 413.7383096523.

The spelling of 70823471 in words is "seventy million, eight hundred twenty-three thousand, four hundred seventy-one".