63245986 has 8 divisors (see below), whose sum is σ = 95276844. Its totient is φ = 31487040.

The previous prime is 63245971. The next prime is 63245989. The reversal of 63245986 is 68954236.

It is the 39-th Fibonacci number F₃₉.

It can be written as a sum of positive squares in 2 ways, for example, as 45981961 + 17264025 = 6781^2 + 4155^2 .

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

It is a super-2 number, since 2×63245986² = 8000109490224392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (63245989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67395 + ... + 68326.

Almost surely, 2^63245986 is an apocalyptic number.

63245986 is a deficient number, since it is larger than the sum of its proper divisors (32030858).

63245986 is a wasteful number, since it uses less digits than its factorization.

63245986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135956.

The product of its digits is 311040, while the sum is 43.

The square root of 63245986 is about 7952.7344982716. The cubic root of 63245986 is about 398.4229277798.

The spelling of 63245986 in words is "sixty-three million, two hundred forty-five thousand, nine hundred eighty-six".