63641461 has 4 divisors (see below), whose sum is σ = 68536972. Its totient is φ = 58745952.

The previous prime is 63641449. The next prime is 63641509. The reversal of 63641461 is 16414636.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33281361 + 30360100 = 5769^2 + 5510^2 .

It is a cyclic number.

It is not a de Polignac number, because 63641461 - 2⁵ = 63641429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63641401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2447736 + ... + 2447761.

It is an arithmetic number, because the mean of its divisors is an integer number (17134243).

Almost surely, 2^63641461 is an apocalyptic number.

It is an amenable number.

63641461 is a deficient number, since it is larger than the sum of its proper divisors (4895511).

63641461 is a wasteful number, since it uses less digits than its factorization.

63641461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4895510.

The product of its digits is 10368, while the sum is 31.

The square root of 63641461 is about 7977.5598399511. The cubic root of 63641461 is about 399.2516445334.

The spelling of 63641461 in words is "sixty-three million, six hundred forty-one thousand, four hundred sixty-one".