63619493 has 6 divisors (see below), whose sum is σ = 74006406. Its totient is φ = 54530952.

The previous prime is 63619481. The next prime is 63619499. The reversal of 63619493 is 39491636.

63619493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 62457409 + 1162084 = 7903^2 + 1078^2 .

It is not a de Polignac number, because 63619493 - 2⁴ = 63619477 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63619493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63619499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 649130 + ... + 649227.

It is an arithmetic number, because the mean of its divisors is an integer number (12334401).

Almost surely, 2^63619493 is an apocalyptic number.

It is an amenable number.

63619493 is a deficient number, since it is larger than the sum of its proper divisors (10386913).

63619493 is a wasteful number, since it uses less digits than its factorization.

63619493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1298371 (or 1298364 counting only the distinct ones).

The product of its digits is 104976, while the sum is 41.

The square root of 63619493 is about 7976.1828589871. The cubic root of 63619493 is about 399.2057008495.

The spelling of 63619493 in words is "sixty-three million, six hundred nineteen thousand, four hundred ninety-three".