63454945 has 8 divisors (see below), whose sum is σ = 77394600. Its totient is φ = 49931520.

The previous prime is 63454943. The next prime is 63454969. The reversal of 63454945 is 54945436.

It can be written as a sum of positive squares in 4 ways, for example, as 7144929 + 56310016 = 2673^2 + 7504^2 .

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

It is not a de Polignac number, because 63454945 - 2¹ = 63454943 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 63454898 and 63454907.

It is not an unprimeable number, because it can be changed into a prime (63454943) 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, 103720 + ... + 104329.

It is an arithmetic number, because the mean of its divisors is an integer number (9674325).

Almost surely, 2^63454945 is an apocalyptic number.

It is an amenable number.

63454945 is a deficient number, since it is larger than the sum of its proper divisors (13939655).

63454945 is a wasteful number, since it uses less digits than its factorization.

63454945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208115.

The product of its digits is 259200, while the sum is 40.

The square root of 63454945 is about 7965.8612214876. The cubic root of 63454945 is about 398.8612298328.

The spelling of 63454945 in words is "sixty-three million, four hundred fifty-four thousand, nine hundred forty-five".