70863629 has 2 divisors, whose sum is σ = 70863630. Its totient is φ = 70863628.

The previous prime is 70863623. The next prime is 70863631. The reversal of 70863629 is 92636807.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65642404 + 5221225 = 8102^2 + 2285^2 .

It is a cyclic number.

It is not a de Polignac number, because 70863629 - 2¹⁶ = 70798093 is a prime.

It is a Sophie Germain prime.

Together with 70863631, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70863623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35431814 + 35431815.

It is an arithmetic number, because the mean of its divisors is an integer number (35431815).

Almost surely, 2^70863629 is an apocalyptic number.

It is an amenable number.

70863629 is a deficient number, since it is larger than the sum of its proper divisors (1).

70863629 is an equidigital number, since it uses as much as digits as its factorization.

70863629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 70863629 is about 8418.0537536892. The cubic root of 70863629 is about 413.8164935438.

The spelling of 70863629 in words is "seventy million, eight hundred sixty-three thousand, six hundred twenty-nine".