63641613 has 8 divisors (see below), whose sum is σ = 96977728. Its totient is φ = 36366624.

The previous prime is 63641597. The next prime is 63641629. The reversal of 63641613 is 31614636.

It is an interprime number because it is at equal distance from previous prime (63641597) and next prime (63641629).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 63641613 - 2⁴ = 63641597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63641653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1515256 + ... + 1515297.

It is an arithmetic number, because the mean of its divisors is an integer number (12122216).

Almost surely, 2^63641613 is an apocalyptic number.

It is an amenable number.

63641613 is a deficient number, since it is larger than the sum of its proper divisors (33336115).

63641613 is a wasteful number, since it uses less digits than its factorization.

63641613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3030563.

The product of its digits is 7776, while the sum is 30.

The square root of 63641613 is about 7977.5693666680. The cubic root of 63641613 is about 399.2519623880.

The spelling of 63641613 in words is "sixty-three million, six hundred forty-one thousand, six hundred thirteen".