63670447 has 2 divisors, whose sum is σ = 63670448. Its totient is φ = 63670446.

The previous prime is 63670441. The next prime is 63670469. The reversal of 63670447 is 74407636.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63670447 - 2⁷ = 63670319 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63670441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31835223 + 31835224.

It is an arithmetic number, because the mean of its divisors is an integer number (31835224).

Almost surely, 2^63670447 is an apocalyptic number.

63670447 is a deficient number, since it is larger than the sum of its proper divisors (1).

63670447 is an equidigital number, since it uses as much as digits as its factorization.

63670447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 37.

The square root of 63670447 is about 7979.3763540768. The cubic root of 63670447 is about 399.3122494256.

The spelling of 63670447 in words is "sixty-three million, six hundred seventy thousand, four hundred forty-seven".