63491488 has 12 divisors (see below), whose sum is σ = 124998930. Its totient is φ = 31745728.

The previous prime is 63491473. The next prime is 63491507. The reversal of 63491488 is 88419436.

It can be written as a sum of positive squares in only one way, i.e., 52012944 + 11478544 = 7212^2 + 3388^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 992023 + ... + 992086.

Almost surely, 2^63491488 is an apocalyptic number.

It is an amenable number.

63491488 is a deficient number, since it is larger than the sum of its proper divisors (61507442).

63491488 is a wasteful number, since it uses less digits than its factorization.

63491488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1984119 (or 1984111 counting only the distinct ones).

The product of its digits is 165888, while the sum is 43.

The square root of 63491488 is about 7968.1546169737. The cubic root of 63491488 is about 398.9377817277.

The spelling of 63491488 in words is "sixty-three million, four hundred ninety-one thousand, four hundred eighty-eight".