70571623 has 2 divisors, whose sum is σ = 70571624. Its totient is φ = 70571622.

The previous prime is 70571621. The next prime is 70571647. The reversal of 70571623 is 32617507.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70571623 - 2¹ = 70571621 is a prime.

Together with 70571621, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70571621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35285811 + 35285812.

It is an arithmetic number, because the mean of its divisors is an integer number (35285812).

Almost surely, 2^70571623 is an apocalyptic number.

70571623 is a deficient number, since it is larger than the sum of its proper divisors (1).

70571623 is an equidigital number, since it uses as much as digits as its factorization.

70571623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 70571623 is about 8400.6918167494. The cubic root of 70571623 is about 413.2473098960.

The spelling of 70571623 in words is "seventy million, five hundred seventy-one thousand, six hundred twenty-three".