70643207 has 2 divisors, whose sum is σ = 70643208. Its totient is φ = 70643206.

The previous prime is 70643149. The next prime is 70643213. The reversal of 70643207 is 70234607.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70643207 - 2¹⁰ = 70642183 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 70643207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70643297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35321603 + 35321604.

It is an arithmetic number, because the mean of its divisors is an integer number (35321604).

Almost surely, 2^70643207 is an apocalyptic number.

70643207 is a deficient number, since it is larger than the sum of its proper divisors (1).

70643207 is an equidigital number, since it uses as much as digits as its factorization.

70643207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 70643207 is about 8404.9513383481. The cubic root of 70643207 is about 413.3869878464.

The spelling of 70643207 in words is "seventy million, six hundred forty-three thousand, two hundred seven".