70863523 has 2 divisors, whose sum is σ = 70863524. Its totient is φ = 70863522.

The previous prime is 70863511. The next prime is 70863557. The reversal of 70863523 is 32536807.

It is an a-pointer prime, because the next prime (70863557) can be obtained adding 70863523 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70863523 - 2¹³ = 70855331 is a prime.

It is not a weakly prime, because it can be changed into another prime (70863503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35431761 + 35431762.

It is an arithmetic number, because the mean of its divisors is an integer number (35431762).

Almost surely, 2^70863523 is an apocalyptic number.

70863523 is a deficient number, since it is larger than the sum of its proper divisors (1).

70863523 is an equidigital number, since it uses as much as digits as its factorization.

70863523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 70863523 is about 8418.0474576947. The cubic root of 70863523 is about 413.8162872105.

It can be divided in two parts, 7086 and 3523, that added together give a square (10609 = 103²).

The spelling of 70863523 in words is "seventy million, eight hundred sixty-three thousand, five hundred twenty-three".