670999963 has 2 divisors, whose sum is σ = 670999964. Its totient is φ = 670999962.

The previous prime is 670999957. The next prime is 671000003. The reversal of 670999963 is 369999076.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 670999963 - 2²¹ = 668902811 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 670999898 and 670999907.

It is not a weakly prime, because it can be changed into another prime (670999363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335499981 + 335499982.

It is an arithmetic number, because the mean of its divisors is an integer number (335499982).

Almost surely, 2^670999963 is an apocalyptic number.

670999963 is a deficient number, since it is larger than the sum of its proper divisors (1).

670999963 is an equidigital number, since it uses as much as digits as its factorization.

670999963 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4960116, while the sum is 58.

The square root of 670999963 is about 25903.6669797926. Note that the first 3 decimals coincide. The cubic root of 670999963 is about 875.4691200886.

The spelling of 670999963 in words is "six hundred seventy million, nine hundred ninety-nine thousand, nine hundred sixty-three".