63690473 has 16 divisors (see below), whose sum is σ = 82861056. Its totient is φ = 47469840.

The previous prime is 63690463. The next prime is 63690481. The reversal of 63690473 is 37409636.

It is a happy number.

It is not a de Polignac number, because 63690473 - 2¹² = 63686377 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63690463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16211 + ... + 19752.

It is an arithmetic number, because the mean of its divisors is an integer number (5178816).

Almost surely, 2^63690473 is an apocalyptic number.

It is an amenable number.

63690473 is a deficient number, since it is larger than the sum of its proper divisors (19170583).

63690473 is a wasteful number, since it uses less digits than its factorization.

63690473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36004.

The product of its (nonzero) digits is 81648, while the sum is 38.

The square root of 63690473 is about 7980.6311153943. The cubic root of 63690473 is about 399.3541097090.

The spelling of 63690473 in words is "sixty-three million, six hundred ninety thousand, four hundred seventy-three".