3621063531 has 16 divisors (see below), whose sum is σ = 4986429440. Its totient is φ = 2334951360.

The previous prime is 3621063527. The next prime is 3621063533. The reversal of 3621063531 is 1353601263.

It is a happy number.

It is not a de Polignac number, because 3621063531 - 2² = 3621063527 is a prime.

It is a super-2 number, since 2×3621063531² = 26224202191076375922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3621063533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190215 + ... + 208383.

It is an arithmetic number, because the mean of its divisors is an integer number (311651840).

Almost surely, 2^3621063531 is an apocalyptic number.

3621063531 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

3621063531 is a deficient number, since it is larger than the sum of its proper divisors (1365365909).

3621063531 is a wasteful number, since it uses less digits than its factorization.

3621063531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20346.

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 3621063531 is about 60175.2734185728. The cubic root of 3621063531 is about 1535.6021617933.

Adding to 3621063531 its reverse (1353601263), we get a palindrome (4974664794).

The spelling of 3621063531 in words is "three billion, six hundred twenty-one million, sixty-three thousand, five hundred thirty-one".