63528331 has 4 divisors (see below), whose sum is σ = 65577664. Its totient is φ = 61479000.

The previous prime is 63528317. The next prime is 63528347. The reversal of 63528331 is 13382536.

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

It is a cyclic number.

It is not a de Polignac number, because 63528331 - 2⁷ = 63528203 is a prime.

It is a super-2 number, since 2×63528331² = 8071697679291122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 2049301 = 63528331 / (6 + 3 + 5 + 2 + 8 + 3 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63528293 and 63528302.

It is not an unprimeable number, because it can be changed into a prime (63528301) 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, 1024620 + ... + 1024681.

It is an arithmetic number, because the mean of its divisors is an integer number (16394416).

Almost surely, 2^63528331 is an apocalyptic number.

63528331 is a deficient number, since it is larger than the sum of its proper divisors (2049333).

63528331 is a wasteful number, since it uses less digits than its factorization.

63528331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2049332.

The product of its digits is 12960, while the sum is 31.

The square root of 63528331 is about 7970.4661720630. The cubic root of 63528331 is about 399.0149323457.

The spelling of 63528331 in words is "sixty-three million, five hundred twenty-eight thousand, three hundred thirty-one".