63523649 has 12 divisors (see below), whose sum is σ = 75469824. Its totient is φ = 53288424.

The previous prime is 63523643. The next prime is 63523673. The reversal of 63523649 is 94632536.

It is not a de Polignac number, because 63523649 - 2⁴ = 63523633 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63523643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11489 + ... + 16094.

It is an arithmetic number, because the mean of its divisors is an integer number (6289152).

Almost surely, 2^63523649 is an apocalyptic number.

It is an amenable number.

63523649 is a deficient number, since it is larger than the sum of its proper divisors (11946175).

63523649 is a wasteful number, since it uses less digits than its factorization.

63523649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27644 (or 27637 counting only the distinct ones).

The product of its digits is 116640, while the sum is 38.

The square root of 63523649 is about 7970.1724573562. The cubic root of 63523649 is about 399.0051297176.

It can be divided in two parts, 6352 and 3649, that added together give a palindrome (10001).

The spelling of 63523649 in words is "sixty-three million, five hundred twenty-three thousand, six hundred forty-nine".