63652281 has 32 divisors (see below), whose sum is σ = 107329536. Its totient is φ = 32592000.

The previous prime is 63652243. The next prime is 63652283. The reversal of 63652281 is 18225636.

It is not a de Polignac number, because 63652281 - 2¹³ = 63644089 is a prime.

It is a super-2 number, since 2×63652281² = 8103225753005922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (63652283) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14461 + ... + 18341.

It is an arithmetic number, because the mean of its divisors is an integer number (3354048).

Almost surely, 2^63652281 is an apocalyptic number.

It is an amenable number.

63652281 is a deficient number, since it is larger than the sum of its proper divisors (43677255).

63652281 is a wasteful number, since it uses less digits than its factorization.

63652281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3973.

The product of its digits is 17280, while the sum is 33.

The square root of 63652281 is about 7978.2379633601. The cubic root of 63652281 is about 399.2742695011.

It can be divided in two parts, 6365 and 2281, that added together give a triangular number (8646 = T₁₃₁).

The spelling of 63652281 in words is "sixty-three million, six hundred fifty-two thousand, two hundred eighty-one".