63949576 has 8 divisors (see below), whose sum is σ = 119905470. Its totient is φ = 31974784.

The previous prime is 63949547. The next prime is 63949577. The reversal of 63949576 is 67594936.

It can be written as a sum of positive squares in only one way, i.e., 45887076 + 18062500 = 6774^2 + 4250^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (63949577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3996841 + ... + 3996856.

Almost surely, 2^63949576 is an apocalyptic number.

It is an amenable number.

63949576 is a deficient number, since it is larger than the sum of its proper divisors (55955894).

63949576 is a wasteful number, since it uses less digits than its factorization.

63949576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7993703 (or 7993699 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 49.

The square root of 63949576 is about 7996.8478790083. The cubic root of 63949576 is about 399.8949223992.

The spelling of 63949576 in words is "sixty-three million, nine hundred forty-nine thousand, five hundred seventy-six".