63491710 has 16 divisors (see below), whose sum is σ = 115570800. Its totient is φ = 25110976.

The previous prime is 63491699. The next prime is 63491713. The reversal of 63491710 is 1719436.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63491713) 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, 34780 + ... + 36559.

It is an arithmetic number, because the mean of its divisors is an integer number (7223175).

Almost surely, 2^63491710 is an apocalyptic number.

63491710 is a deficient number, since it is larger than the sum of its proper divisors (52079090).

63491710 is a wasteful number, since it uses less digits than its factorization.

63491710 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71435.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 63491710 is about 7968.1685474141. The cubic root of 63491710 is about 398.9382466934.

The spelling of 63491710 in words is "sixty-three million, four hundred ninety-one thousand, seven hundred ten".