63471701 has 4 divisors (see below), whose sum is σ = 63749100. Its totient is φ = 63194304.

The previous prime is 63471673. The next prime is 63471703. The reversal of 63471701 is 10717436.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47679025 + 15792676 = 6905^2 + 3974^2 .

It is a cyclic number.

It is not a de Polignac number, because 63471701 - 2¹⁰ = 63470677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63471703) 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, 138356 + ... + 138813.

It is an arithmetic number, because the mean of its divisors is an integer number (15937275).

Almost surely, 2^63471701 is an apocalyptic number.

It is an amenable number.

63471701 is a deficient number, since it is larger than the sum of its proper divisors (277399).

63471701 is a wasteful number, since it uses less digits than its factorization.

63471701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277398.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 63471701 is about 7966.9128901978. The cubic root of 63471701 is about 398.8963346913.

The spelling of 63471701 in words is "sixty-three million, four hundred seventy-one thousand, seven hundred one".