63698407 has 2 divisors, whose sum is σ = 63698408. Its totient is φ = 63698406.

The previous prime is 63698399. The next prime is 63698419. The reversal of 63698407 is 70489636.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63698407 - 2³ = 63698399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63698807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31849203 + 31849204.

It is an arithmetic number, because the mean of its divisors is an integer number (31849204).

Almost surely, 2^63698407 is an apocalyptic number.

63698407 is a deficient number, since it is larger than the sum of its proper divisors (1).

63698407 is an equidigital number, since it uses as much as digits as its factorization.

63698407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 63698407 is about 7981.1281783968. The cubic root of 63698407 is about 399.3706916969.

The spelling of 63698407 in words is "sixty-three million, six hundred ninety-eight thousand, four hundred seven".