63699960 has 32 divisors (see below), whose sum is σ = 191100240. Its totient is φ = 16986624.

The previous prime is 63699959. The next prime is 63699967. The reversal of 63699960 is 6999636.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63699967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 265297 + ... + 265536.

Almost surely, 2^63699960 is an apocalyptic number.

63699960 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63699960 is an abundant number, since it is smaller than the sum of its proper divisors (127400280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63699960 is a wasteful number, since it uses less digits than its factorization.

63699960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530847 (or 530843 counting only the distinct ones).

The product of its (nonzero) digits is 472392, while the sum is 48.

The square root of 63699960 is about 7981.2254698135. The cubic root of 63699960 is about 399.3739372916.

The spelling of 63699960 in words is "sixty-three million, six hundred ninety-nine thousand, nine hundred sixty".