63454691 has 4 divisors (see below), whose sum is σ = 63471072. Its totient is φ = 63438312.

The previous prime is 63454687. The next prime is 63454709. The reversal of 63454691 is 19645436.

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

It is a cyclic number.

It is not a de Polignac number, because 63454691 - 2² = 63454687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63454681) 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, 1241 + ... + 11333.

It is an arithmetic number, because the mean of its divisors is an integer number (15867768).

Almost surely, 2^63454691 is an apocalyptic number.

63454691 is a deficient number, since it is larger than the sum of its proper divisors (16381).

63454691 is a wasteful number, since it uses less digits than its factorization.

63454691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16380.

The product of its digits is 77760, while the sum is 38.

The square root of 63454691 is about 7965.8452784372. The cubic root of 63454691 is about 398.8606976395.

The spelling of 63454691 in words is "sixty-three million, four hundred fifty-four thousand, six hundred ninety-one".