611504481 has 48 divisors (see below), whose sum is σ = 973997952. Its totient is φ = 334264320.

The previous prime is 611504461. The next prime is 611504521. The reversal of 611504481 is 184405116.

It is not a de Polignac number, because 611504481 - 2⁵ = 611504449 is a prime.

It is a super-2 number, since 2×611504481² = 747875460566158722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (611504441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3168321 + ... + 3168513.

It is an arithmetic number, because the mean of its divisors is an integer number (20291624).

Almost surely, 2^611504481 is an apocalyptic number.

It is an amenable number.

611504481 is a deficient number, since it is larger than the sum of its proper divisors (362493471).

611504481 is a wasteful number, since it uses less digits than its factorization.

611504481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422 (or 391 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 611504481 is about 24728.6166414541. The cubic root of 611504481 is about 848.7892709663.

Adding to 611504481 its reverse (184405116), we get a palindrome (795909597).

The spelling of 611504481 in words is "six hundred eleven million, five hundred four thousand, four hundred eighty-one".