63890623 has 2 divisors, whose sum is σ = 63890624. Its totient is φ = 63890622.

The previous prime is 63890609. The next prime is 63890627. The reversal of 63890623 is 32609836.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63890623 - 2²⁵ = 30336191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63890627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31945311 + 31945312.

It is an arithmetic number, because the mean of its divisors is an integer number (31945312).

Almost surely, 2^63890623 is an apocalyptic number.

63890623 is a deficient number, since it is larger than the sum of its proper divisors (1).

63890623 is an equidigital number, since it uses as much as digits as its factorization.

63890623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 63890623 is about 7993.1610142671. The cubic root of 63890623 is about 399.7720013162.

The spelling of 63890623 in words is "sixty-three million, eight hundred ninety thousand, six hundred twenty-three".