63504394 has 4 divisors (see below), whose sum is σ = 95256594. Its totient is φ = 31752196.

The previous prime is 63504391. The next prime is 63504431. The reversal of 63504394 is 49340536.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 45738169 + 17766225 = 6763^2 + 4215^2 .

It is not an unprimeable number, because it can be changed into a prime (63504391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15876097 + ... + 15876100.

Almost surely, 2^63504394 is an apocalyptic number.

63504394 is a deficient number, since it is larger than the sum of its proper divisors (31752200).

63504394 is a wasteful number, since it uses less digits than its factorization.

63504394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31752199.

The product of its (nonzero) digits is 38880, while the sum is 34.

The square root of 63504394 is about 7968.9644245661. The cubic root of 63504394 is about 398.9648107692.

The spelling of 63504394 in words is "sixty-three million, five hundred four thousand, three hundred ninety-four".