63890523 has 6 divisors (see below), whose sum is σ = 92286324. Its totient is φ = 42593676.

The previous prime is 63890513. The next prime is 63890537. The reversal of 63890523 is 32509836.

It is not a de Polignac number, because 63890523 - 2⁹ = 63890011 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (63890513) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3549465 + ... + 3549482.

It is an arithmetic number, because the mean of its divisors is an integer number (15381054).

Almost surely, 2^63890523 is an apocalyptic number.

63890523 is a deficient number, since it is larger than the sum of its proper divisors (28395801).

63890523 is a wasteful number, since it uses less digits than its factorization.

63890523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7098953 (or 7098950 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 63890523 is about 7993.1547589172. The cubic root of 63890523 is about 399.7717927450.

The spelling of 63890523 in words is "sixty-three million, eight hundred ninety thousand, five hundred twenty-three".