63501965 has 16 divisors (see below), whose sum is σ = 79947648. Its totient is φ = 48328896.

The previous prime is 63501943. The next prime is 63501979. The reversal of 63501965 is 56910536.

It is a cyclic number.

It is not a de Polignac number, because 63501965 - 2⁶ = 63501901 is a prime.

It is a super-2 number, since 2×63501965² = 8064999117722450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21254 + ... + 24056.

It is an arithmetic number, because the mean of its divisors is an integer number (4996728).

Almost surely, 2^63501965 is an apocalyptic number.

It is an amenable number.

63501965 is a deficient number, since it is larger than the sum of its proper divisors (16445683).

63501965 is a wasteful number, since it uses less digits than its factorization.

63501965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3028.

The product of its (nonzero) digits is 24300, while the sum is 35.

The square root of 63501965 is about 7968.8120193665. The cubic root of 63501965 is about 398.9597239932.

The spelling of 63501965 in words is "sixty-three million, five hundred one thousand, nine hundred sixty-five".