3521721463 has 8 divisors (see below), whose sum is σ = 3793697600. Its totient is φ = 3249898848.

The previous prime is 3521721461. The next prime is 3521721473. The reversal of 3521721463 is 3641271253.

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

It is a cyclic number.

It is not a de Polignac number, because 3521721463 - 2¹ = 3521721461 is a prime.

It is a super-3 number, since 3×3521721463³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3521721461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11698 + ... + 84736.

It is an arithmetic number, because the mean of its divisors is an integer number (474212200).

Almost surely, 2^3521721463 is an apocalyptic number.

3521721463 is a deficient number, since it is larger than the sum of its proper divisors (271976137).

3521721463 is a wasteful number, since it uses less digits than its factorization.

3521721463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76761.

The product of its digits is 30240, while the sum is 34.

The square root of 3521721463 is about 59344.0937499259. The cubic root of 3521721463 is about 1521.4289227525.

The spelling of 3521721463 in words is "three billion, five hundred twenty-one million, seven hundred twenty-one thousand, four hundred sixty-three".