70663 has 2 divisors, whose sum is σ = 70664. Its totient is φ = 70662.

The previous prime is 70657. The next prime is 70667. The reversal of 70663 is 36607.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (36607) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70663 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35331 + 35332.

It is an arithmetic number, because the mean of its divisors is an integer number (35332).

2⁷⁰⁶⁶³ is an apocalyptic number.

70663 is a deficient number, since it is larger than the sum of its proper divisors (1).

70663 is an equidigital number, since it uses as much as digits as its factorization.

70663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 70663 is about 265.8251304900. The cubic root of 70663 is about 41.3425592193.

The spelling of 70663 in words is "seventy thousand, six hundred sixty-three".